Vulnerability CVE-2007-4783
Published: 2007-09-10   Modified: 2012-02-12

Description:
The iconv_substr function in PHP 5.2.4 and earlier allows context-dependent attackers to cause (1) a denial of service (application crash) via a long string in the charset parameter, probably also requiring a long string in the str parameter; or (2) a denial of service (temporary application hang) via a long string in the str parameter. 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.

See advisories in our WLB2 database:
Topic
Author
Date
Low
PHP <=5.2.4 iconv_substr() denial of service
laurent gaffie
12.09.2007

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
PHP -> PHP 

 References:
http://securityreason.com/securityalert/3115
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/1/478637/100/0/threaded
http://www.securityfocus.com/archive/1/491693/100/0/threaded
https://issues.rpath.com/browse/RPL-1943
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