CVE-2012-4505

critical
Published 2012-11-11 · Modified 2026-04-29
CVSS v3
CVSS v2
10.0
VIR risk
10.0

Description

Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x and 0.3.x allows remote servers to have an unspecified impact via a crafted Content-Length size in an HTTP response header for a proxy.pac file request, a different vulnerability than CVE-2012-4504.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-4505

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/51180

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://secunia.com/advisories/51048

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed0.3.1-5.1
debian debianbullseyefixed0.3.1-5.1
debian debianforkyfixed0.3.1-5.1
debian debiansidfixed0.3.1-5.1
debian debiantrixiefixed0.3.1-5.1

Application impact

VendorProductVersionsFixed
libproxy_projectlibproxy0.2.3
libproxy_projectlibproxy0.3.0
libproxy_projectlibproxy0.3.1

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.