Vulmon
Amazon Linux AMI Security Advisory: ALAS-2023-1793
Advisory Release Date: 2023-08-03 20:16 Pacific
Advisory Updated Date: 2023-08-08 20:52 Pacific
Severity:
Important
Issue Overview:
Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy's HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11. (CVE-2023-35945)
Affected Packages:
nghttp2
Issue Correction:
Run yum update nghttp2 to update your system.
New Packages:
i686:
libnghttp2-1.33.0-1.1.7.amzn1.i686
nghttp2-1.33.0-1.1.7.amzn1.i686
nghttp2-debuginfo-1.33.0-1.1.7.amzn1.i686
libnghttp2-devel-1.33.0-1.1.7.amzn1.i686
src:
nghttp2-1.33.0-1.1.7.amzn1.src
x86_64:
nghttp2-1.33.0-1.1.7.amzn1.x86_64
libnghttp2-1.33.0-1.1.7.amzn1.x86_64
nghttp2-debuginfo-1.33.0-1.1.7.amzn1.x86_64
libnghttp2-devel-1.33.0-1.1.7.amzn1.x86_64