Bug 285891 (CVE-2007-4783)

Summary:	CVE-2007-4783 php crash in iconv_substr() function
Product:	[Other] Security Response	Reporter:	Tomas Hoger <thoger>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED NOTABUG	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jorton
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
URL:	http://nvd.nist.gov/nvd.cfm?cvename=CVE-2007-4783
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2007-09-12 18:58:15 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Tomas Hoger 2007-09-11 13:15:48 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2007-4783 to the following vulnerability:

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.

References:

http://www.securityfocus.com/archive/1/archive/1/478637/100/0/threaded

Comment 1 Josh Bressers 2007-09-12 18:58:15 UTC

We do not consider these to be security issues. For more details see
http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1
and http://www.php.net/security-note.php

Comment 2 Tomas Hoger 2007-11-29 14:36:57 UTC

Addresses in PHP 5.2.5 along with related CVE-2007-4840, patch:

http://cvs.php.net/viewvc.cgi/php-src/ext/iconv/iconv.c?r1=1.153&r2=1.154
http://cvs.php.net/viewvc.cgi/php-src/ext/iconv/php_iconv.h?r1=1.32&r2=1.33