CVE-2009-3622

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    CVE-2009-3622

    Published: 23 Oct 2009Last Modified: 10 Apr 2026

    Summary:

    Details: Algorithmic complexity vulnerability in wp-trackback.php in WordPress before 2.8.5 allows remote attackers to cause a denial of service (CPU consumption and server hang) via a long title parameter in conjunction with a charset parameter composed of many comma-separated "UTF-8" substrings, related to the mb_convert_encoding function in PHP.

    References: http://marc.info/?l=oss-security&m=125612393329041&w=2, http://marc.info/?l=oss-security&m=125614592004825&w=2, http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/, http://seclists.org/fulldisclosure/2009/Oct/263, http://secunia.com/advisories/37088, http://security-sh3ll.blogspot.com/2009/10/wordpress-resource-exhaustion-denial-of.html, http://securitytracker.com/id?1023072, http://wordpress.org/development/2009/10/wordpress-2-8-5-hardening-release/, http://www.vupen.com/english/advisories/2009/2986, https://exchange.xforce.ibmcloud.com/vulnerabilities/53884, http://marc.info/?l=oss-security&m=125612393329041&w=2, http://marc.info/?l=oss-security&m=125614592004825&w=2, http://seclists.org/fulldisclosure/2009/Oct/263, http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/, http://seclists.org/fulldisclosure/2009/Oct/263, http://www.vupen.com/english/advisories/2009/2986, http://rooibo.wordpress.com/2009/10/17/agujero-de-seguridad-en-wordpress/, https://bugzilla.redhat.com/show_bug.cgi?id=530056, http://codes.zerial.org/php/wp-trackbacks_dos.phps, http://www.osvdb.org/59077

    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