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TI-2012-03847 Aliases CVE-2012-4505GHSA-8g7q-m58p-3p6w

Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x…

Priority MEDIUM 49CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
— Not recorded in CVSS 2.0
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
Complete · Complete · Complete
Fix status
Fixed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-119 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.03218 88th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:libproxy_project:libproxy:0.2.3:*:*:*:*:*:*:*0.2.3VulnerableLibproxy Project
cpe:2.3:a:libproxy_project:libproxy:0.3.0:*:*:*:*:*:*:*0.3.0VulnerableLibproxy Project
cpe:2.3:a:libproxy_project:libproxy:0.3.1:*:*:*:*:*:*:*0.3.1VulnerableLibproxy Project
  • cpe:2.3:a:libproxy_project:libproxy:0.2.3:*:*:*:*:*:*:* Versions 0.2.3 Vulnerable ·Libproxy Project
  • cpe:2.3:a:libproxy_project:libproxy:0.3.0:*:*:*:*:*:*:* Versions 0.3.0 Vulnerable ·Libproxy Project
  • cpe:2.3:a:libproxy_project:libproxy:0.3.1:*:*:*:*:*:*:* Versions 0.3.1 Vulnerable ·Libproxy Project

Remediation

Red Hat 1 advisory

  • RHSA-2012:1461 Released 2012-11-14 · Red Hat rating Moderate
    libproxy security update
    • Red Hat Enterprise Linux Desktop (v. 6) libproxy-0.3.0-3.el6_3, libproxy-bin-0.3.0-3.el6_3, libproxy-python-0.3.0-3.el6_3
    • Red Hat Enterprise Linux Desktop Optional (v. 6) libproxy-0.3.0-3.el6_3, libproxy-devel-0.3.0-3.el6_3, libproxy-gnome-0.3.0-3.el6_3 +3
    • Red Hat Enterprise Linux HPC Node Optional (v. 6) libproxy-0.3.0-3.el6_3, libproxy-bin-0.3.0-3.el6_3, libproxy-devel-0.3.0-3.el6_3 +5
    • Red Hat Enterprise Linux Server (v. 6) libproxy-0.3.0-3.el6_3, libproxy-0.3.0-3.el6_3.ppc, libproxy-bin-0.3.0-3.el6_3 +1
    • Red Hat Enterprise Linux Server Optional (v. 6) libproxy-0.3.0-3.el6_3, libproxy-devel-0.3.0-3.el6_3, libproxy-devel-0.3.0-3.el6_3.ppc +4
    • Red Hat Enterprise Linux Workstation (v. 6) libproxy-0.3.0-3.el6_3, libproxy-bin-0.3.0-3.el6_3, libproxy-python-0.3.0-3.el6_3
    • Red Hat Enterprise Linux Workstation Optional (v. 6) libproxy-0.3.0-3.el6_3, libproxy-devel-0.3.0-3.el6_3, libproxy-gnome-0.3.0-3.el6_3 +3

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux Desktop (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux Desktop Optional (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux HPC Node Optional (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux Server (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux Server Optional (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux Workstation (v. 6)Fixed RHSA-2012:1461
Red Hat Enterprise Linux Workstation Optional (v. 6)Fixed RHSA-2012:1461

Timeline

  1. 2026-10-02 Threatist record created from CVE-2012-4505
  2. 2026-10-03 Alias added: GHSA-8g7q-m58p-3p6w

References

Advisory 4

Other 5

  • TI-2012-03846 Stack-based buffer overflow in the url::get_pac function in url.cpp in libproxy 0.4.x… CVSS 2.0HIGH 10.0
  • TI-2020-15989 url.cpp in libproxy through 0.4.15 is prone to a buffer overflow when PAC is enabled, as… CVSS 3.1CRITICAL 9.8
  • TI-2020-15460 url::recvline in url.cpp in libproxy 0.4.x through 0.4.15 allows a remote HTTP server to… CVSS 3.1HIGH 7.5
  • TI-2012-04695 Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy… CVSS 2.0HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences