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Details of issue NIXPKGS-2026-1245

NIXPKGS-2026-1245
published 2 months ago
Permalink CVE-2026-33602
6.5 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): High (H)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): High (H)
  • 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): Low (L)
  • Modified Availability (MA): High (H)
updated 2 months ago by @LeSuisse Activity log
  • Created suggestion 2 months ago
  • @LeSuisse accepted 2 months ago
  • @LeSuisse published on GitHub 2 months ago
Off-by-one access when processing crafted UDP responses

A rogue backend can send a crafted UDP response with a query ID off by one related to the maximum configured value, triggering an out-of-bounds write leading to a denial of service.

Affected products

dnsdist
  • <2.0.4
  • <1.9.13

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