National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2007-4783 Detail

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.

Source:  MITRE      Last Modified:  09/10/2007

Quick Info

CVE Dictionary Entry:
CVE-2007-4783
Original release date:
09/10/2007
Last revised:
03/07/2011
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

Vendor Statements (disclaimer)

Official Statement from Red Hat (09/12/2007)

We do not consider this to be a security issue. For more information please see http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1 and http://www.php.net/security-note.php

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://securityreason.com/securityalert/3115 External Source SREASON 3115
http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242 External Source CONFIRM http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242
http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml External Source GENTOO GLSA-200710-02
http://www.securityfocus.com/archive/1/archive/1/478637/100/0/threaded Exploit External Source BUGTRAQ 20070905 PHP <=5.2.4 iconv_substr() denial of service
http://www.securityfocus.com/archive/1/archive/1/491693/100/0/threaded External Source HP HPSBUX02332
https://issues.rpath.com/browse/RPL-1943 External Source CONFIRM https://issues.rpath.com/browse/RPL-1943

Technical Details

Vulnerability Type (View All)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:php:php:*:*:*:*:*:*:*:*    versions up to (including) 5.2.4

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

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