CVE-2014-5117

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    CVE-2014-5117

    Published: 30 Jul 2014Last Modified: 16 Apr 2026

    Summary:

    Details: Tor before 0.2.4.23 and 0.2.5 before 0.2.5.6-alpha maintains a circuit after an inbound RELAY_EARLY cell is received by a client, which makes it easier for remote attackers to conduct traffic-confirmation attacks by using the pattern of RELAY and RELAY_EARLY cells as a means of communicating information about hidden service names.

    References: http://secunia.com/advisories/60084, http://secunia.com/advisories/60647, https://blog.torproject.org/blog/tor-security-advisory-relay-early-traffic-confirmation-attack, https://lists.torproject.org/pipermail/tor-announce/2014-July/000094.html, https://lists.torproject.org/pipermail/tor-announce/2014-July/000093.html, https://lists.torproject.org/pipermail/tor-talk/2014-July/034180.html, https://trac.torproject.org/projects/tor/ticket/1038

    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
    CVE-2014-5117 | CVE-DB