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Vulnerability DatabaseCVE-2021-36221
CVE-2021-36221:
NixOS vulnerability analysis and mitigation
Overview
Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition vulnerability (CVE-2021-36221) in the net/http/httputil ReverseProxy component. The vulnerability was discovered in July 2021 and disclosed by Andrew Crump from VMware (Golang Announce).
Technical details
The vulnerability stems from a race condition that can occur when a ReverseProxy's Handler aborts with ErrAbortHandler, for example due to an error in copying the response body. This can lead to a panic in the net/http/httputil ReverseProxy component (NVD, Golang Announce).
Impact
If successfully exploited, this vulnerability can lead to a denial of service condition through a panic in the ReverseProxy component. An attacker might be able to force the conditions leading to the race condition (Debian LTS).
Mitigation and workarounds
The vulnerability has been fixed in Go versions 1.15.15 and 1.16.7. Users are strongly recommended to upgrade to these versions or later. The fix was released on August 5, 2021 (Golang Announce).
Additional resources
Source: This report was generated using AI
Related NixOS vulnerabilities:
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