Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
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)
...
-> io.netty.handler.codec.http.HttpContentCompressor (Extension)
-> io.netty.handler.codec.compression.ZlibCodecFactory (Extension)
-> ❌ io.netty.handler.codec.compression.JZlibDecoder (Vulnerable Component)
```
Vulnerability Details
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
: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.
CVE-2020-11612 - High Severity Vulnerability
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: /Users/alexmaybaum/.m2/repository/io/netty/netty-codec/4.1.13.Final/netty-codec-4.1.13.Final.jar
Dependency Hierarchy: - transport-5.6.4.jar (Root Library) - transport-netty4-client-5.6.4.jar - :x: **netty-codec-4.1.13.Final.jar** (Vulnerable Library)
Found in HEAD commit: 9c6901108cf0138889fa46846fabfcb78828d070
Found in base branch: vp-rem
Reachability Analysis(Reachable)
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) ... -> io.netty.handler.codec.http.HttpContentCompressor (Extension) -> io.netty.handler.codec.compression.ZlibCodecFactory (Extension) -> ❌ io.netty.handler.codec.compression.JZlibDecoder (Vulnerable Component) ```
The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker could send a large ZlibEncoded byte stream to the Netty server, forcing the server to allocate all of its free memory to a single decoder.
Publish Date: 2020-04-07
URL: CVE-2020-11612
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: High
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://netty.io/news/2020/02/28/4-1-46-Final.html
Release Date: 2020-04-07
Fix Resolution: io.netty:netty-codec:4.1.46.Final;io.netty:netty-all:4.1.46.Final