What’s Vulnerable › Vulnerabilities

CVE-2011-2778

• Severity: high (CVSS 7.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-12-23 · updated 2026-06-16
• Weakness: CWE-119

Description

Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code by (1) establishing a SOCKS connection to SocksPort or (2) leveraging a SOCKS proxy configuration.

Affected products

• Tor: through 0.2.2.34; 0.0.2, 0.0.3, 0.0.4, 0.0.5, 0.0.6, 0.0.6.1 (+223)

References

• http://www.debian.org/security/2011/dsa-2363
• https://blog.torproject.org/blog/tor-02235-released-security-patches
• http://www.debian.org/security/2011/dsa-2363
• https://blog.torproject.org/blog/tor-02235-released-security-patches

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