CVE-2007-4840

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    CVE-2007-4840

    Published: 12 Sept 2007Last Modified: 10 Apr 2026

    Summary:

    Details: PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service (application crash) via (1) a long string in the out_charset parameter to the iconv function; or a long string in the charset parameter to the (2) iconv_mime_decode_headers, (3) iconv_mime_decode, or (4) iconv_strlen function. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.

    References: http://secunia.com/advisories/27102, http://secunia.com/advisories/27659, http://secunia.com/advisories/28658, http://secunia.com/advisories/30040, http://lists.opensuse.org/opensuse-security-announce/2008-01/msg00006.html, http://osvdb.org/38916, http://securityreason.com/securityalert/3122, http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242, http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml, http://www.securityfocus.com/archive/1/478730/100/0/threaded, http://www.securityfocus.com/archive/1/491693/100/0/threaded, https://issues.rpath.com/browse/RPL-1943

    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-2007-4840 | CVE-DB