CVE catalog

CVE-2012-0840

apr: CVE-2012-0840

Severity: Medium
Published: Jan 5, 2012, 12:00:00 AM UTC
Source: [NVD] · [CVE record]
EPSS: 42.14% · Oct 25, 2026

tables/apr_hash.c in the Apache Portable Runtime (APR) library through 1.4.5 computes hash values without restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	apr	sid	`1.7.6-3`	fixed
Debian	apr	forky	`1.7.6-3`	fixed
Debian	apr	trixie	`1.7.5-1`	fixed
Debian	apr	bookworm	`1.7.2-3+deb12u1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	apr	source	sid	`1.4.6-1`	low	Not reported	[655435]
Debian	apr	source	forky	`1.4.6-1`	low	Not reported	[655435]
Debian	apr	source	trixie	`1.4.6-1`	low	Not reported	[655435]
Debian	apr	source	bookworm	`1.4.6-1`	low	Not reported	[655435]

[Debian bug #655435]

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[libapr1]Fixed
Source package: [apr]
Details (2)
- 1.7.2-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · bookworm; dsa · apr · debian · 12
- 1.7.2-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · bookworm; dsa · apr · debian · 12
[libapr1-dev]Fixed
Source package: [apr]
Details (2)
- 1.7.2-3+deb12u1 · amd64 · bookworm
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · bookworm; dsa · apr · debian · 12
- 1.7.2-3+deb12u1 · arm64 · bookworm
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · bookworm; dsa · apr · debian · 12

[Debian 13 (Trixie)]

[libapr1-dev]Fixed
Source package: [apr]
Details (2)
- 1.7.5-1 · amd64 · trixie
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · 13
- 1.7.5-1 · arm64 · trixie
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · 13
[libapr1t64]Fixed
Source package: [apr]
Details (2)
- 1.7.5-1 · amd64 · trixie
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · 13
- 1.7.5-1 · arm64 · trixie
  Fixed · Fixed: 1.4.6-1
  dsa · apr · debian · 13

Observed: Oct 23, 2026, 5:05:53 PM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]