CVE-2012-4419

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    CVE-2012-4419

    Published: 14 Sept 2012Last Modified: 10 Apr 2026

    Summary:

    Details: The compare_tor_addr_to_addr_policy function in or/policies.c in Tor before 0.2.2.39, and 0.2.3.x before 0.2.3.21-rc, allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a zero-valued port field that is not properly handled during policy comparison.

    References: http://secunia.com/advisories/50583, http://security.gentoo.org/glsa/glsa-201301-03.xml, http://lists.fedoraproject.org/pipermail/package-announce/2012-September/088006.html, http://lists.opensuse.org/opensuse-updates/2012-10/msg00005.html, http://openwall.com/lists/oss-security/2012/09/13/2, https://gitweb.torproject.org/tor.git/blob/release-0.2.2:/ReleaseNotes, https://gitweb.torproject.org/tor.git/commit/62d96284f7e0f81c40d5df7e53dd7b4dfe7e56a5, https://lists.torproject.org/pipermail/tor-talk/2012-September/025434.html, https://trac.torproject.org/projects/tor/ticket/6690

    Affected packages

    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