CVE-2023-35945 (High) detected in nghttp2v1.41.0 #612

Vulnerable Library - nghttp2v1.41.0

nghttp2 - HTTP/2 C Library and tools

Library home page: https://github.com/nghttp2/nghttp2.git

Found in HEAD commit: 00fdb00d5bdbaea4fec4642989374d82cbdb1a3c

Found in base branch: master

Vulnerable Source Files (2)

/deps/nghttp2/lib/nghttp2_session.c
/deps/nghttp2/lib/nghttp2_session.c

Vulnerability Details

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.

Publish Date: 2023-07-13

URL: CVE-2023-35945

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: None
  • Availability Impact: High

Suggested Fix

Type: Upgrade version

Release Date: 2023-07-13

Fix Resolution: v1.55.1