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Details of issue NIXPKGS-2026-0702

NIXPKGS-2026-0702
published on
Permalink CVE-2026-3547
7.5 HIGH
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
updated 1 month, 3 weeks ago by @LeSuisse Activity log
  • Created suggestion 1 month, 3 weeks ago
  • @LeSuisse accepted 1 month, 3 weeks ago
  • @LeSuisse published on GitHub 1 month, 3 weeks ago
wolfSSL: out-of-bounds read (DoS) in ALPN parsing due to incomplete validation

Out-of-bounds read in ALPN parsing due to incomplete validation. wolfSSL 5.8.4 and earlier contained an out-of-bounds read in ALPN handling when built with ALPN enabled (HAVE_ALPN / --enable-alpn). A crafted ALPN protocol list could trigger an out-of-bounds read, leading to a potential process crash (denial of service). Note that ALPN is disabled by default, but is enabled for these 3rd party compatibility features: enable-apachehttpd, enable-bind, enable-curl, enable-haproxy, enable-hitch, enable-lighty, enable-jni, enable-nginx, enable-quic.

Affected products

wolfSSL
  • <5.9.0

Matching in nixpkgs

pkgs.wolfssl

Small, fast, portable implementation of TLS/SSL for embedded devices

Package maintainers

Upstream patch: https://github.com/wolfSSL/wolfssl/commit/9d3cc6e30c778b124002cc45b7974d718b6649fd