Bug 1361986 – CVE-2016-5261 Mozilla: Integer overflow and memory corruption in WebSocketChannel (MFSA 2016-75, MFSA 2016-86)

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Bug 1361986 - (CVE-2016-5261) CVE-2016-5261 Mozilla: Integer overflow and memory corruption in WebSocketChannel (MFSA 2016-75, MFSA 2016-86)

Summary:	CVE-2016-5261 Mozilla: Integer overflow and memory corruption in WebSocketCha...

Status:	CLOSED ERRATA

Aliases:	CVE-2016-5261

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

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

URL:
Whiteboard:	impact=important,public=20160920,repo...
Keywords:	Reopened, Security

Depends On:
Blocks:	1360577 1369653
	Show dependency tree / graph

Reported:	2016-08-01 02:33 EDT by Huzaifa S. Sidhpurwala
Modified:	2016-09-23 01:33 EDT (History)
CC List:	2 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:
Story Points:	---
Clone Of:
Environment:
Last Closed:	2016-09-23 01:33:28 EDT
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
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External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2016:1912	normal	SHIPPED_LIVE	Critical: firefox security update	2016-09-21 07:47:31 EDT

Groups: None (edit)

Description Huzaifa S. Sidhpurwala 2016-08-01 02:33:26 EDT

Security researcher Samuel Groß reported an integer overflow error in WebSockets during data buffering on incoming packets when an allocated buffer is resized incorrectly. This results in the buffer array holding the data being shrunk, instead of grown, resulting in attacker controlled data being written at a known offset from the newly allocated buffer. This results in a potentially exploitable crash. 


External Reference:

https://www.mozilla.org/security/advisories/mfsa2016-75/
https://www.mozilla.org/security/advisories/mfsa2016-86/


Acknowledgements:

Name: the Mozilla project
Upstream: Samuel Groß

Comment 1 errata-xmlrpc 2016-09-21 03:49:07 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7
  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2016:1912 https://rhn.redhat.com/errata/RHSA-2016-1912.html

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