The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38…
Priority LOW 28CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Partial
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly handle an invalid flavor name, which allows remote attackers to cause a denial of service (out-of-bounds read and daemon crash) via a crafted (1) vote document or (2) consensus document.
Why it matters now
EPSS 0.02775 86th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2012-3518
- 2026-10-03 Alias added: GHSA-qcx3-c5rp-cj34
References
Advisory 2
Other 5
- [tor-announce] 20120819 Tor 0.2.2.38 is released
- [oss-security] 20120821 Re: CVE Request -- Tor 0.2.2.38: Three issues
- https://gitweb.torproject.org/tor.git/commit/55f635745afacefffdaafc72cc176ca7ab817546
- https://trac.torproject.org/projects/tor/ticket/6530
- https://gitweb.torproject.org/tor.git/commit/57e35ad3d91724882c345ac709666a551a977f0f
More Tor vulnerabilities
- TI-2010-01618 Heap-based buffer overflow in Tor before 0.2.1.28 and 0.2.2.x before 0.2.2.20-alpha… CVSS 2.0HIGH 10.0
- TI-2009-00394 Unspecified vulnerability in Tor before 0.2.0.33 has unspecified impact and remote attack… CVSS 2.0HIGH 10.0
- TI-2009-00893 Tor before 0.2.0.34 treats incomplete IPv4 addresses as valid, which has unknown impact… CVSS 2.0HIGH 10.0
- TI-2008-05138 Tor before 0.2.0.32 does not properly process the ClientDNSRejectInternalAddresses… CVSS 2.0HIGH 9.3
- TI-2011-02436 Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to… CVSS 2.0HIGH 7.6
- TI-2006-03307 Integer overflow in Tor before 0.1.1.20 allows remote attackers to execute arbitrary code… CVSS 2.0HIGH 7.5
Sources
- CVE-2012-3518 · CVE Program
- CVE-2012-3518 · NVD
- FIRST EPSS
- GHSA-qcx3-c5rp-cj34 · GitHub Advisory Database · CC BY 4.0
- CVE-2012-3518 · 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