Bug 674709 – CVE-2011-0755 php: mt_rand() does not check that max is greater than min

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Bug 674709 - (CVE-2011-0755) CVE-2011-0755 php: mt_rand() does not check that max is greater than min

Summary:	CVE-2011-0755 php: mt_rand() does not check that max is greater than min

Status:	CLOSED NOTABUG

Aliases:	CVE-2011-0755

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

Priority	unspecified Severity unspecified
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
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URL:
Whiteboard:	public=20081117,reported=20110202,sou...
Keywords:	Security

Depends On:
Blocks:
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Reported:	2011-02-02 20:24 EST by Vincent Danen
Modified:	2015-08-19 05:03 EDT (History)
CC List:	1 user (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
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Environment:
Last Closed:	2011-03-01 08:37:40 EST
Type:	---
Regression:	---
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Description Vincent Danen 2011-02-02 20:24:57 EST

Common Vulnerabilities and Exposures assigned an identifier CVE-2011-0755 to
the following vulnerability:

Name: CVE-2011-0755
URL: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0755
Assigned: 20110202
Reference: CONFIRM: http://bugs.php.net/46587
Reference: CONFIRM: http://www.php.net/ChangeLog-5.php

Integer overflow in the mt_rand function in PHP before 5.3.4 might
make it easier for context-dependent attackers to predict the return
values by leveraging a script's use of a large max parameter, as
demonstrated by a value that exceeds mt_getrandmax.

Comment 1 Vincent Danen 2011-02-02 20:26:34 EST

Statement:

Red Hat does not consider this flaw to be a security issue as arguments passed to the mt_rand function are under the full control of the script author. No trust boundary is crossed.

This flaw exists in the php53 packages versions as shipped in Red Hat Enterprise Linux 5 and the php packages versions as shipped in Red Hat Enterprise Linux 6.

Comment 2 Tomas Hoger 2011-03-01 08:37:40 EST

Closing as not-a-security-bug.  As noted in the upstream bug, affected function returned random numbers from the specified range, but without enforcing which argument is minimal an which is maximal value.

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