mend-for-github-com[bot]
commented
6 months ago :information_source: This issue was automatically closed by Mend because it is a duplicate of an existing issue: #45
Closed mend-for-github-com[bot] closed 6 months ago
mend-for-github-com[bot]
commented
6 months ago :information_source: This issue was automatically closed by Mend because it is a duplicate of an existing issue: #45
CVE-2021-32777 - High Severity Vulnerability
Fork of Envoy used for testing and tinkering as part of the Istio dev process
Library home page: https://github.com/istio/envoy.git
Found in HEAD commit: d853fd7abd23b213e8ecb1eded4fd77944aa8ed5
Found in base branch: main
Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions when ext-authz extension is sending request headers to the external authorization service it must merge multiple value headers according to the HTTP spec. However, only the last header value is sent. This may allow specifically crafted requests to bypass authorization. Attackers may be able to escalate privileges when using ext-authz extension or back end service that uses multiple value headers for authorization. A specifically constructed request may be delivered by an untrusted downstream peer in the presence of ext-authz extension. Envoy versions 1.19.1, 1.18.4, 1.17.4, 1.16.5 contain fixes to the ext-authz extension to correctly merge multiple request header values, when sending request for authorization.
Publish Date: 2021-08-24
URL: CVE-2021-32777
Base Score Metrics: - Exploitability Metrics: - Attack Vector: Network - Attack Complexity: Low - Privileges Required: None - User Interaction: None - Scope: Changed - Impact Metrics: - Confidentiality Impact: Low - Integrity Impact: Low - Availability Impact: Low
For more information on CVSS3 Scores, click here.Type: Upgrade version
Origin: https://github.com/envoyproxy/envoy/security/advisories/GHSA-6g4j-5vrw-2m8h
Release Date: 2021-08-24
Fix Resolution: 1.16.5, 1.17.4, 1.18.4, 1.19.1