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CVE-2007-4840 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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

see all 24 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-20	Improper Input Validation	[email protected]

Affected Products

Product	Versions
php php	<= 5.2.4
CPE cpe:2.3:a:php:php:::::::: Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 16, 2026	CVE Modified	[email protected]
Apr 23, 2026	Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Oct 15, 2018	CVE Modified	[email protected]
Sep 13, 2007	Initial Analysis	[email protected]