Bug 618167 – CVE-2010-1866 php: dechunk filter integer signedness error causing buffer overflow (MOPS-2010-003)

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Bug 618167 - (CVE-2010-1866, MOPS-2010-003) CVE-2010-1866 php: dechunk filter integer signedness error causing buffer overflow (MOPS-2010-003)

Summary:	CVE-2010-1866 php: dechunk filter integer signedness error causing buffer ove...

Status:	CLOSED NOTABUG

Aliases:	CVE-2010-1866, MOPS-2010-003

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	medium Severity medium
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	impact=moderate,source=internet,repor...
Keywords:	Security

Depends On:	624469
Blocks:
	Show dependency tree / graph

Reported:	2010-07-26 06:20 EDT by Tomas Hoger
Modified:	2015-10-15 17:14 EDT (History)
CC List:	3 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2013-04-11 15:58:34 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
MOPS-2010-003 reproducer (176 bytes, text/plain) 2010-07-26 06:23 EDT, Tomas Hoger	no flags	Details
Add an attachment (proposed patch, testcase, etc.)

Groups: None (edit)

Description Tomas Hoger 2010-07-26 06:20:30 EDT

Common Vulnerabilities and Exposures assigned an identifier CVE-2010-1866 to the following vulnerability:

The dechunk filter in PHP 5.3 through 5.3.2, when decoding an HTTP chunked encoding stream, allows context-dependent attackers to cause a denial of service (crash) and possibly trigger memory corruption via a negative chunk size, which bypasses a signed comparison, related to an integer overflow in the chunk size decoder.

Reference:
http://php-security.org/2010/05/02/mops-2010-003-php-dechunk-filter-signed-comparison-vulnerability/index.html

Comment 1 Tomas Hoger 2010-07-26 06:23:47 EDT

Created attachment 434377 [details]
MOPS-2010-003 reproducer

Comment 2 Tomas Hoger 2010-07-26 06:25:18 EDT

dechunk filter is not available in pre-5.3 PHP versions.

Statement:

Not vulnerable. This issue did not affect the versions of php as shipped with Red Hat Enterprise Linux 3, 4, or 5, and Red Hat Application Stack v2.

Comment 3 Tomas Hoger 2010-07-26 06:29:34 EDT

Upstream commit:
  http://svn.php.net/viewvc?view=revision&revision=298700

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