Bug 690894 (CVE-2011-1467)

Summary:	CVE-2011-1467 php: NumberFormatter: set a symbol value crash (DoS) on bogus values
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED DUPLICATE	QA Contact:
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	fedora, jorton, rpm
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-03-25 18:13:44 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 Jan Lieskovsky 2011-03-25 18:00:43 UTC

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-1467 to
the following vulnerability:

Unspecified vulnerability in the NumberFormatter::setSymbol (aka
numfmt_set_symbol) function in the Intl extension in PHP before 5.3.6
allows context-dependent attackers to cause a denial of service
(application crash) via an invalid argument, a related issue to
CVE-2010-4409.

References:
[1] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-1467
[2] http://bugs.php.net/bug.php?id=53512
[3] http://www.php.net/ChangeLog-5.php

Upstream patch:
[4] http://svn.php.net/viewvc/?view=revision&amp;revision=306154
[5] http://svn.php.net/viewvc/?view=revision&amp;revision=306157
    (test case)

Comment 1 Jan Lieskovsky 2011-03-25 18:02:26 UTC

Public PoC (from [2]):
======================
numfmt_set_symbol(numfmt_create("en", NumberFormatter::PATTERN_DECIMAL),
2147483648, "");

Comment 2 Jan Lieskovsky 2011-03-25 18:04:07 UTC

This issue did NOT affect the versions of the php package, as shipped
with Red Hat Enterprise Linux 4 and 5.

--

This issue affects the version of the php53 package, as shipped with
Red Hat Enterprise Linux 5.

This issue affects the version of the php package, as shipped with
Red Hat Enterprise Linux 6.

--

This issue does not affect the versions of the php package, as
shipped with Fedora release of 13 and 14 (particular package updates
have been already scheduled).

Comment 3 Tomas Hoger 2011-03-25 18:13:44 UTC

This has already been discussed in bug #660382.

*** This bug has been marked as a duplicate of bug 660382 ***

Comment 4 Vincent Danen 2011-07-27 16:32:52 UTC

Statement:

This issue did not affect the versions of PHP as shipped with Red Hat Enterprise Linux 4 and 5.  The getSymbol() and setSymbol() functions are unlikely to ever receive untrusted input as an $attr argument, and it is even less likely that they would receive such input when only a small set of pre-defined constants is expected.  As a result, this flaw can only be triggered by the script author and cannot be used to cross trust boundaries. The Red Hat Security Response Team does not consider it to be security-relevant.