CVE-2011-0015

    Dashboard / Vulnerabilities / CVE-2011-0015

    CVE-2011-0015

    Published: 19 Jan 2011Last Modified: 10 Apr 2026

    Summary:

    Details: Tor before 0.2.1.29 and 0.2.2.x before 0.2.2.21-alpha does not properly check the amount of compression in zlib-compressed data, which allows remote attackers to cause a denial of service via a large compression factor.

    References: http://secunia.com/advisories/42905, http://secunia.com/advisories/42907, http://www.debian.org/security/2011/dsa-2148, http://www.vupen.com/english/advisories/2011/0131, http://www.vupen.com/english/advisories/2011/0132, http://archives.seul.org/or/announce/Jan-2011/msg00000.html, http://blog.torproject.org/blog/tor-02129-released-security-patches, https://gitweb.torproject.org/tor.git/blob/refs/heads/release-0.2.2:/ChangeLog, http://www.openwall.com/lists/oss-security/2011/01/18/7, http://www.securityfocus.com/bid/45832, http://www.securitytracker.com/id?1024980, https://trac.torproject.org/projects/tor/ticket/2324

    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