Bug 1265769 – CVE-2015-4512 Mozilla: Out-of-bounds read during 2D canvas display on Linux 16-bit color depth systems (MFSA 2015-107)

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Bug 1265769 - (CVE-2015-4512) CVE-2015-4512 Mozilla: Out-of-bounds read during 2D canvas display on Linux 16-bit color depth systems (MFSA 2015-107)

Summary:	CVE-2015-4512 Mozilla: Out-of-bounds read during 2D canvas display on Linux 1...

Status:	CLOSED NOTABUG

Aliases:	CVE-2015-4512

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,public=20150922,repor...
Keywords:	Security

Depends On:
Blocks:	1261782
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Reported:	2015-09-23 13:34 EDT by Prasad J Pandit
Modified:	2015-09-24 12:42 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-09-24 12:33:11 EDT
Type:	---
Regression:	---
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RHEL 7.3 requirements from Atomic Host:
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Description Prasad J Pandit 2015-09-23 13:34:18 EDT

Security researcher Francisco Alonso of the NowSecure Research Team used the
Address Sanitizer tool to discover an out-of-bounds read issue during 2D canvas
rendering. This was due to an issue in the cairo graphics library when surfaces
are created with 32-bit color depth but displayed on a 16-bit color depth
system, which is unsupported. This allows an attacker to read an amount of
random memory following the heap for the 16-bit surface leading to information
disclosure.

This issue is specific to Linux in certain configurations and does not
affect Windows or OS X systems.

External Reference:

https://www.mozilla.org/en-US/security/advisories/mfsa2015-107/

Comment 1 Martin Prpič 2015-09-24 08:35:44 EDT

Acknowledgements:

Red Hat would like to thank the Mozilla project for reporting this issue. Upstream acknowledges Francisco Alonso of the NowSecure Research Team as the original reporter.

Comment 2 Martin Prpič 2015-09-24 12:33:11 EDT

This issue was fixed in Firefox version 41.

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