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...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2016-10207
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1415719 1418945 1418946
Blocks: 1386080 1415638 1415718
TreeView+ depends on / blocked
 
Reported: 2017-02-02 16:36 UTC by Andrej Nemec
Modified: 2019-09-29 14:06 UTC (History)
4 users (show)

Fixed In Version:
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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.
Clone Of:
Environment:
Last Closed: 2019-06-08 03:06:51 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:0630 0 normal SHIPPED_LIVE Moderate: tigervnc security and bug fix update 2017-03-21 12:29:39 UTC
Red Hat Product Errata RHSA-2017:2000 0 normal SHIPPED_LIVE Moderate: tigervnc and fltk security, bug fix, and enhancement update 2017-08-01 18:33:08 UTC

Description Andrej Nemec 2017-02-02 16:36:01 UTC 
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 16:37:12 UTC 
Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1415719]
Comment 6 Andrej Nemec 2017-02-06 08:20:44 UTC 
CVE assignment:

http://seclists.org/oss-sec/2017/q1/312
Comment 7 errata-xmlrpc 2017-03-21 09:53:25 UTC 
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 20:51:27 UTC 
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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