Bug 1415712 – CVE-2017-5581 tigervnc: Buffer overflow in ModifiablePixelBuffer::fillRect

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Bug 1415712 - (CVE-2017-5581) CVE-2017-5581 tigervnc: Buffer overflow in ModifiablePixelBuffer::fillRect

Summary:	CVE-2017-5581 tigervnc: Buffer overflow in ModifiablePixelBuffer::fillRect

Status:	NEW

Aliases:	CVE-2017-5581

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

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

URL:
Whiteboard:	impact=low,public=20170113,reported=2...
Keywords:	Security

Depends On:	1415719 1416289 1416290
Blocks:	1386080 1415638 1415718
	Show dependency tree / graph

Reported:	2017-01-23 09:10 EST by Adam Mariš
Modified:	2018-03-29 18:02 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:	tigervnc 1.7.1
Doc Type:	If docs needed, set a value
Doc Text:	A buffer overflow flaw, leading to memory corruption, was found in TigerVNC viewer. A remote malicious VNC server could use this flaw to crash the client vncviewer process resulting in denial of service.
Story Points:	---
Clone Of:
Environment:
Last Closed:
Type:	---
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHSA-2017:0630	normal	SHIPPED_LIVE	Moderate: tigervnc security and bug fix update	2017-03-21 08:29:39 EDT
Red Hat Product Errata	RHSA-2017:2000	normal	SHIPPED_LIVE	Moderate: tigervnc and fltk security, bug fix, and enhancement update	2017-08-01 14:33:08 EDT

Groups: None (edit)

Description Adam Mariš 2017-01-23 09:10:24 EST

A buffer overflow vulnerability in ModifiablePixelBuffer::fillRect in vncviewer was found allowing malicious VNC server to send crafted RRE message and possibly take control of the TigerVNC viewer.

Upstream patch:

https://github.com/TigerVNC/tigervnc/commit/18c020124ff1b2441f714da2017f63dba50720ba

PR:

https://github.com/TigerVNC/tigervnc/pull/399

Reference:

http://seclists.org/oss-sec/2017/q1/166

Comment 1 Adam Mariš 2017-01-23 09:17:27 EST

Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1415719]

Comment 2 Jan Grulich 2017-01-23 12:56:50 EST

This fix has been merged to tigervnc 1.7.1 which is already included in Fedora and pushed as regular update. Not sure whether I should change the update description and type or leave it as it is.

Comment 9 Adam Mariš 2017-01-25 05:09:51 EST

CVE assignment:

http://seclists.org/oss-sec/2017/q1/189

Comment 11 errata-xmlrpc 2017-03-21 05:53:11 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2017:0630 https://rhn.redhat.com/errata/RHSA-2017-0630.html

Comment 12 errata-xmlrpc 2017-08-01 16:51:19 EDT

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2017:2000 https://access.redhat.com/errata/RHSA-2017:2000

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