Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension)
-> io.netty.handler.codec.http.HttpObjectAggregator (Extension)
-> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component)
```
### Vulnerability Details
HttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2019-20444
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension)
-> io.netty.handler.codec.http.HttpObjectAggregator (Extension)
-> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component)
```
### Vulnerability Details
HttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2020-7238
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension)
-> io.netty.handler.codec.http.HttpObjectAggregator (Extension)
-> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component)
```
### Vulnerability Details
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
For more information on CVSS3 Scores, click here.
### Suggested Fix
Type: Upgrade version
Release Date: 2020-01-27
Fix Resolution: 4.1.44.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2019-16869
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension)
-> io.netty.handler.codec.http.HttpObjectAggregator (Extension)
-> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component)
```
### Vulnerability Details
Netty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2021-43797
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.cors.Netty4CorsConfig (Extension)
-> ❌ io.netty.handler.codec.http.DefaultHttpHeaders (Vulnerable Component)
```
### Vulnerability Details
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.
Mend Note: After conducting further research, Mend has determined that all versions of netty up to version 4.1.71.Final are vulnerable to CVE-2021-43797.
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2021-21295
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
This vulnerability is potentially used
```
com.visualpathit.account.utils.ElasticsearchUtil (Application)
-> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension)
-> org.elasticsearch.transport.Netty4Plugin (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension)
-> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension)
-> io.netty.handler.codec.http.HttpObjectAggregator (Extension)
-> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component)
```
### Vulnerability Details
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling. In a proxy case, users may assume the content-length is validated somehow, which is not the case. If the request is forwarded to a backend channel that is a HTTP/1.1 connection, the Content-Length now has meaning and needs to be checked. An attacker can smuggle requests inside the body as it gets downgraded from HTTP/2 to HTTP/1.1. For an example attack refer to the linked GitHub Advisory. Users are only affected if all of this is true: `HTTP2MultiplexCodec` or `Http2FrameCodec` is used, `Http2StreamFrameToHttpObjectCodec` is used to convert to HTTP/1.1 objects, and these HTTP/1.1 objects are forwarded to another remote peer. This has been patched in 4.1.60.Final As a workaround, the user can do the validation by themselves by implementing a custom `ChannelInboundHandler` that is put in the `ChannelPipeline` behind `Http2StreamFrameToHttpObjectCodec`.
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.
CVE-2021-21290
### Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.
:heavy_check_mark: This issue was automatically closed by Mend because the vulnerable library in the specific branch(es) was either marked as ignored or it is no longer part of the Mend inventory.
Vulnerable Library - netty-codec-http-4.1.13.Final.jar
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Vulnerabilities
**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation
Details
CVE-2019-20445
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension) -> io.netty.handler.codec.http.HttpObjectAggregator (Extension) -> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component) ```
### Vulnerability DetailsHttpObjectDecoder.java in Netty before 4.1.44 allows a Content-Length header to be accompanied by a second Content-Length header, or by a Transfer-Encoding header.
Publish Date: 2020-01-29
URL: CVE-2019-20445
### CVSS 3 Score Details (9.1)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20445
Release Date: 2020-01-29
Fix Resolution: 4.1.44.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2019-20444
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension) -> io.netty.handler.codec.http.HttpObjectAggregator (Extension) -> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component) ```
### Vulnerability DetailsHttpObjectDecoder.java in Netty before 4.1.44 allows an HTTP header that lacks a colon, which might be interpreted as a separate header with an incorrect syntax, or might be interpreted as an "invalid fold."
Publish Date: 2020-01-29
URL: CVE-2019-20444
### CVSS 3 Score Details (9.1)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20444
Release Date: 2020-01-29
Fix Resolution: 4.1.44.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2020-7238
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension) -> io.netty.handler.codec.http.HttpObjectAggregator (Extension) -> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component) ```
### Vulnerability DetailsNetty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
Publish Date: 2020-01-27
URL: CVE-2020-7238
### CVSS 3 Score Details (7.5)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Release Date: 2020-01-27
Fix Resolution: 4.1.44.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2019-16869
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension) -> io.netty.handler.codec.http.HttpObjectAggregator (Extension) -> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component) ```
### Vulnerability DetailsNetty before 4.1.42.Final mishandles whitespace before the colon in HTTP headers (such as a "Transfer-Encoding : chunked" line), which leads to HTTP request smuggling.
Publish Date: 2019-09-26
URL: CVE-2019-16869
### CVSS 3 Score Details (7.5)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-16869
Release Date: 2019-09-26
Fix Resolution: 4.1.42.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2021-43797
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.cors.Netty4CorsConfig (Extension) -> ❌ io.netty.handler.codec.http.DefaultHttpHeaders (Vulnerable Component) ```
### Vulnerability DetailsNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final. Mend Note: After conducting further research, Mend has determined that all versions of netty up to version 4.1.71.Final are vulnerable to CVE-2021-43797.
Publish Date: 2021-12-09
URL: CVE-2021-43797
### CVSS 3 Score Details (6.5)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: Required - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: CVE-2021-43797
Release Date: 2021-12-09
Fix Resolution: 4.1.71.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2021-21295
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThis vulnerability is potentially used ``` com.visualpathit.account.utils.ElasticsearchUtil (Application) -> org.elasticsearch.transport.client.PreBuiltTransportClient (Extension) -> org.elasticsearch.transport.Netty4Plugin (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport (Extension) -> org.elasticsearch.http.netty4.Netty4HttpServerTransport$HttpChannelHandler (Extension) -> io.netty.handler.codec.http.HttpObjectAggregator (Extension) -> ❌ io.netty.handler.codec.http.HttpObjectDecoder (Vulnerable Component) ```
### Vulnerability DetailsNetty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling. In a proxy case, users may assume the content-length is validated somehow, which is not the case. If the request is forwarded to a backend channel that is a HTTP/1.1 connection, the Content-Length now has meaning and needs to be checked. An attacker can smuggle requests inside the body as it gets downgraded from HTTP/2 to HTTP/1.1. For an example attack refer to the linked GitHub Advisory. Users are only affected if all of this is true: `HTTP2MultiplexCodec` or `Http2FrameCodec` is used, `Http2StreamFrameToHttpObjectCodec` is used to convert to HTTP/1.1 objects, and these HTTP/1.1 objects are forwarded to another remote peer. This has been patched in 4.1.60.Final As a workaround, the user can do the validation by themselves by implementing a custom `ChannelInboundHandler` that is put in the `ChannelPipeline` behind `Http2StreamFrameToHttpObjectCodec`.
Publish Date: 2021-03-09
URL: CVE-2021-21295
### CVSS 3 Score Details (5.9)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: High - Privileges Required: None - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: None - Integrity Impact: High - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://github.com/advisories/GHSA-wm47-8v5p-wjpj
Release Date: 2021-03-09
Fix Resolution: 4.1.60.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.CVE-2021-21290
### Vulnerable Library - netty-codec-http-4.1.13.Final.jarNetty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients.
Library home page: http://netty.io/
Path to dependency file: /pom.xml
Path to vulnerable library: /home/wss-scanner/.m2/repository/io/netty/netty-codec-http/4.1.13.Final/netty-codec-http-4.1.13.Final.jar,/target/vprofile-v2/WEB-INF/lib/netty-codec-http-4.1.13.Final.jar
Dependency Hierarchy: - :x: **netty-codec-http-4.1.13.Final.jar** (Vulnerable Library)
Found in base branch: vp-rem
### Reachability AnalysisThe vulnerable code is not reachable.
### Vulnerability DetailsNetty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.
Publish Date: 2021-02-08
URL: CVE-2021-21290
### CVSS 3 Score Details (5.5)Base Score Metrics: - Exploitability Metrics: - Attack Vector: Local - Attack Complexity: Low - Privileges Required: Low - User Interaction: None - Scope: Unchanged - Impact Metrics: - Confidentiality Impact: High - Integrity Impact: None - Availability Impact: None
For more information on CVSS3 Scores, click here. ### Suggested FixType: Upgrade version
Origin: https://github.com/netty/netty/security/advisories/GHSA-5mcr-gq6c-3hq2
Release Date: 2021-02-08
Fix Resolution: 4.1.59.Final
:rescue_worker_helmet: Automatic Remediation will be attempted for this issue.:rescue_worker_helmet:Automatic Remediation will be attempted for this issue.