Bug 1151307 – CVE-2014-8240 tigervnc: integer overflow flaw, leading to a heap-based buffer overflow in screen size handling

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Bug 1151307 - (CVE-2014-8240) CVE-2014-8240 tigervnc: integer overflow flaw, leading to a heap-based buffer overflow in screen size handling

Summary:	CVE-2014-8240 tigervnc: integer overflow flaw, leading to a heap-based buffer...

Status:	CLOSED ERRATA

Aliases:	CVE-2014-8240

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=20141010,repor...
Keywords:	Security

Depends On:	1248422
Blocks:	1210268 1248061
	Show dependency tree / graph

Reported:	2014-10-10 01:16 EDT by Siddharth Sharma
Modified:	2015-11-23 06:39 EST (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:	An integer overflow flaw, leading to a heap-based buffer overflow, was found in the way TigerVNC handled screen sizes. A malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client.
Story Points:	---
Clone Of:
Environment:
Last Closed:	2015-11-20 00:29:43 EST
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
tigervnc-1.3.1-CVE-2014-8240.patch (proposed 1.3.1 patch) (2.47 KB, patch) 2014-10-16 07:41 EDT, Tim Waugh	no flags	Details \| Diff
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2015:2233	normal	SHIPPED_LIVE	Moderate: tigervnc security, bug fix, and enhancement update	2015-11-19 04:11:46 EST

Groups: None (edit)

Description Siddharth Sharma 2014-10-10 01:16:57 EDT

This issue was discovered by Tim Waugh of Red Hat. Tigervnc is affected by same thing as in CVE-2014-6051. Integer overflaw leading to a heap-based buffer overflow was found in the way screen sizes were handled. A Malicious VNC server could use this flaw to cause a client to crash or, potentially, execute arbitrary code on the client.

Comment 7 Tim Waugh 2014-10-16 07:41:25 EDT

Created attachment 947578 [details]
tigervnc-1.3.1-CVE-2014-8240.patch (proposed 1.3.1 patch)

Comment 10 errata-xmlrpc 2015-11-19 04:03:16 EST

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2233 https://rhn.redhat.com/errata/RHSA-2015-2233.html

Comment 11 Huzaifa S. Sidhpurwala 2015-11-20 00:29:43 EST

Statement:

This issue affects the version of tigervnc as shipped with Red Hat Enterprise Linux 5 and 6. This has been rated as having Moderate security impact and is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 5 and 6.

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