Bug 857882 (CVE-2012-4400)

Summary:	CVE-2012-4400 moodle: File upload size constraint issue (MSA-12-0051)
Product:	[Other] Security Response	Reporter:	Jan Lieskovsky <jlieskov>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	gwync
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	moodle 2.3.2, moodle 2.2.5, moodle 2.1.8	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-01-21 20:54:49 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:
Bug Depends On:	857981, 857983, 857984
Bug Blocks:

Description Jan Lieskovsky 2012-09-17 12:05:49 UTC

A possibility to bypass file upload size constraint was found in the way the webservice script, called from the filepicker front end of Moodle, a course management system, performed sanitization of 'maxbytes' variable. A remote attacker could issue a specially-crafted request that, when processed could allow an attacker to upload a file even if it was larger than specified constraint.

Upstream patch:
[1] http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-30792

References:
[2] http://www.openwall.com/lists/oss-security/2012/09/17/1

Comment 1 Jan Lieskovsky 2012-09-17 12:23:33 UTC

This issue affects the versions of the moodle package, as shipped with Fedora release of 16 and 17. Please schedule an update.

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This issue affects the version of the moodle package, as shipped with Fedora EPEL 6. Please schedule an update.

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This issue did NOT affect the version of the moodle package, as shipped with Fedora EPEL 5.

Comment 2 Gwyn Ciesla 2012-09-17 16:19:07 UTC

Update in progress, not linked to any BZ, none assigned to me.

Comment 3 Jan Lieskovsky 2012-09-17 16:24:33 UTC

(In reply to comment #2)
> Update in progress, not linked to any BZ, none assigned to me.

Thanks, Jon. Do you need child bugs yet?

Comment 4 Gwyn Ciesla 2012-09-17 16:27:52 UTC

Not really, only to attach to the Bodhi update.  I've already got the builds and the updates done and in the pipe.  Might be good for completeness.

Comment 5 Prasad Pandit 2012-09-17 16:48:09 UTC

Created moodle tracking bugs for this issue

Affects: fedora-17 [bug 857981]

Comment 6 Prasad Pandit 2012-09-17 16:51:59 UTC

Created moodle tracking bugs for this issue

Affects: fedora-16 [bug 857983]

Comment 7 Prasad Pandit 2012-09-17 16:53:56 UTC

Created moodle tracking bugs for this issue

Affects: epel-6 [bug 857984]