CVE-2009-2855

    Dashboard / Vulnerabilities / CVE-2009-2855

    CVE-2009-2855

    Published: 18 Aug 2009Last Modified: 10 Apr 2026

    Summary:

    Details: The strListGetItem function in src/HttpHeaderTools.c in Squid 2.7 allows remote attackers to cause a denial of service via a crafted auth header with certain comma delimiters that trigger an infinite loop of calls to the strcspn function.

    References: http://www.squid-cache.org/bugs/show_bug.cgi?id=2704, https://bugzilla.redhat.com/show_bug.cgi?id=518182, http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=534982, http://bugs.debian.org/cgi-bin/bugreport.cgi?msg=31%3Bfilename=diff%3Batt=1%3Bbug=534982, http://www.openwall.com/lists/oss-security/2009/07/20/10, http://www.openwall.com/lists/oss-security/2009/08/03/3, http://www.openwall.com/lists/oss-security/2009/08/04/6, http://www.securityfocus.com/bid/36091, http://www.securitytracker.com/id?1022757, http://www.squid-cache.org/bugs/show_bug.cgi?id=2541, https://exchange.xforce.ibmcloud.com/vulnerabilities/52610, https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10592

    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-2009-2855 | CVE-DB