Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy…
Priority LOW 38CWE-94Published · 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
- Partial · Partial · Partial
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 2.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-94.
Summary
Format string vulnerability in the print_proxies function in bin/proxy.c in libproxy 0.3.1 might allow context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via format string specifiers in a proxy name, as demonstrated using the http_proxy environment variable or a PAC file.
Why it matters now
EPSS 0.03129 87th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:libproxy_project:libproxy:0.3.1:*:*:*:*:*:*:* | 0.3.1 | Vulnerable | Libproxy Project |
- cpe:2.3:a:libproxy_project:libproxy:0.3.1:*:*:*:*:*:*:* Versions 0.3.1 Vulnerable ·Libproxy Project
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2012-5580
- 2026-10-03 Alias added: GHSA-mccr-h554-3wjw
References
More Libproxy Project Libproxy vulnerabilities
- TI-2012-03847 Heap-based buffer overflow in the px_pac_reload function in lib/pac.c in libproxy 0.2.x… CVSS 2.0HIGH 10.0
- 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
Sources
- CVE-2012-5580 · CVE Program
- CVE-2012-5580 · NVD
- FIRST EPSS
- GHSA-mccr-h554-3wjw · GitHub Advisory Database · CC BY 4.0
- CVE-2012-5580 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences