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Suggestion detail

Untriaged
Permalink CVE-2026-52684
3.7 LOW
  • 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): None (N)
  • 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): None (N)
created 1 month ago Activity log
  • Created suggestion 1 month ago
Prefetch Feature Allows Persistent Ghost Domain Cache Poisoning Attack

If the auth responds very slowly and the records expire in between, the capping of TTLs is not enforced for lack of data. This does not happen on regular resolve as then then the child records are used immediately if not expired and thus valid, or the records are expired, and in that case not used. So this case can only happen if almost expired records are used to refresh the authoritative NS records.

Affected products

pdns-recursor
  • <5.5.0

Matching in nixpkgs

pkgs.rotp

Open-source modernization of the 1993 classic "Master of Orion", written in Java

  • nixos-unstable -
    • nixos-unstable-small 1.04
  • nixos-26.05 -
    • nixos-26.05-small 1.04

pkgs.pdns-recursor

Recursive DNS server

  • nixos-unstable -
    • nixos-unstable-small 5.4.3
  • nixos-26.05 -
    • nixos-26.05-small 5.4.3

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