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    CVE-2012-4419

    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.

    Published:Sep 14, 2012
    Last Modified:Apr 11, 2025
    EPS:Sep 14, 2012
    EPSS Score:0.01621
    CVSS Score:5

    Affected Products

    Vendor
    Torproject
    Product
    Tor

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-77641 (CVSS 6.5) — tor before 0.4.9.9 was prone to a NULL write after free when sending a CONFLUX_SWITCH cell fails. The return v…
    CVE-2026-77640 (CVSS 3.7) — tor before 0.4.9.9 was prone to an infinite loop when decompressing a truncated zlib/gzip stream with done=1.…
    CVE-2026-77639 (CVSS 5.3) — Tor before 0.4.9.9 was prone to a compression bomb bypass where an attacker could concatenate many gzip or zli…
    CVE-2026-77638 (CVSS 8.9) — Tor before 0.4.9.11 is prone to a race condition where in just the right circumstances a rendezvous point coul…
    CVE-2026-77587 (CVSS 5.9) — Tor before 0.4.9.11 is prone to a use-after-free (and potential double free) of a conflux object when a recove…
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    References

    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
    http://secunia.com/advisories/50583
    http://security.gentoo.org/glsa/glsa-201301-03.xml
    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
    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
    http://secunia.com/advisories/50583
    http://security.gentoo.org/glsa/glsa-201301-03.xml
    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

    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