Bug 1418761 – CVE-2016-10207 tigervnc: VNC server can crash when TLS handshake terminates early

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Bug 1418761 - (CVE-2016-10207) CVE-2016-10207 tigervnc: VNC server can crash when TLS handshake terminates early

Summary:	CVE-2016-10207 tigervnc: VNC server can crash when TLS handshake terminates e...

Status:	NEW

Aliases:	CVE-2016-10207

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=20160823,repor...
Keywords:	Security

Depends On:	1415719 1418945 1418946
Blocks:	1386080 1415638 1415718
	Show dependency tree / graph

Reported:	2017-02-02 11:36 EST by Andrej Nemec
Modified:	2018-03-29 18:02 EDT (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	If docs needed, set a value
Doc Text:	A denial of service flaw was found in the TigerVNC's Xvnc server. A remote unauthenticated attacker could use this flaw to make Xvnc crash by terminating the TLS handshake process early.
Story Points:	---
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Last Closed:
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Regression:	---
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CRM:
Verified Versions:
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oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

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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 Andrej Nemec 2017-02-02 11:36:01 EST

A vulnerability was found in tigerVNC. The Xvnc server from tigervnc can crash when a client terminates a TLS connection early. This is due to invalid initialization/deinitialization order of the GnuTLS library.

References:

http://seclists.org/oss-sec/2017/q1/297

Upstream patch:

https://github.com/TigerVNC/tigervnc/commit/8aa4bc53206c2430bbf0c8f4b642f59a379ee649

Comment 1 Andrej Nemec 2017-02-02 11:37:12 EST

Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1415719]

Comment 6 Andrej Nemec 2017-02-06 03:20:44 EST

CVE assignment:

http://seclists.org/oss-sec/2017/q1/312

Comment 7 errata-xmlrpc 2017-03-21 05:53:25 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 8 errata-xmlrpc 2017-08-01 16:51:27 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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