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    CVE-2011-0427

    Heap-based buffer overflow in Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha allows remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unspecified vectors.

    Published:Jan 19, 2011
    Last Modified:Apr 11, 2025
    EPS:Jan 19, 2011
    EPSS Score:0.05919
    CVSS Score:6.8

    Affected Products

    Vendor
    Tor
    Product
    Tor

    Exploits

    No exploit reference

    Related CVEs

    CVE-2025-4444 (CVSS 6.3) — A security flaw has been discovered in Tor up to 0.4.7.16/0.4.8.17. Impacted is an unknown function of the com…
    CVE-2012-3517 (CVSS 5) — Use-after-free vulnerability in dns.c in Tor before 0.2.2.38 might allow remote attackers to cause a denial of…
    CVE-2012-3518 (CVSS 5) — The networkstatus_parse_vote_from_string function in routerparse.c in Tor before 0.2.2.38 does not properly ha…
    CVE-2012-3519 (CVSS 5) — routerlist.c in Tor before 0.2.2.38 uses a different amount of time for relay-list iteration depending on whic…
    CVE-2011-4894 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, uses direct DirPort access instead of a Tor TLS connection f…
    CVE-2011-2769 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, accepts the CREATE and CREATE_FAST values in the Command fie…
    CVE-2011-4895 (CVSS 4.3) — Tor before 0.2.2.34, when configured as a bridge, sets up circuits through a process different from the proces…
    CVE-2011-4897 (CVSS 4.3) — Tor before 0.2.2.25-alpha, when configured as a relay without the Nickname configuration option, uses the loca…
    CVE-2011-2778 (CVSS 7.6) — Multiple heap-based buffer overflows in Tor before 0.2.2.35 allow remote attackers to cause a denial of servic…
    CVE-2011-4896 (CVSS 4.3) — Tor before 0.2.2.24-alpha continues to use a reachable bridge that was previously configured but is not curren…

    References

    http://archives.seul.org/or/announce/Jan-2011/msg00000.html
    http://blog.torproject.org/blog/tor-02129-released-security-patches
    http://secunia.com/advisories/42905
    http://secunia.com/advisories/42907
    http://www.debian.org/security/2011/dsa-2148
    http://www.securityfocus.com/bid/45832
    http://www.securitytracker.com/id?1024980
    http://www.vupen.com/english/advisories/2011/0131
    http://www.vupen.com/english/advisories/2011/0132
    https://exchange.xforce.ibmcloud.com/vulnerabilities/64748
    https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog
    http://archives.seul.org/or/announce/Jan-2011/msg00000.html
    http://blog.torproject.org/blog/tor-02129-released-security-patches
    http://secunia.com/advisories/42905
    http://secunia.com/advisories/42907
    http://www.debian.org/security/2011/dsa-2148
    http://www.securityfocus.com/bid/45832
    http://www.securitytracker.com/id?1024980
    http://www.vupen.com/english/advisories/2011/0131
    http://www.vupen.com/english/advisories/2011/0132
    https://exchange.xforce.ibmcloud.com/vulnerabilities/64748
    https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High