Bug 1438694 (CVE-2017-7392) - CVE-2017-7392 tigervnc: SSecurityVeNCrypt memory leak
Summary: CVE-2017-7392 tigervnc: SSecurityVeNCrypt memory leak
Status: CLOSED ERRATA
Alias: CVE-2017-7392
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard: impact=low,public=20170329,reported=2...
Keywords: Security
Depends On: 1438704 1439127
Blocks: 1415638 1438705
TreeView+ depends on / blocked
 
Reported: 2017-04-04 08:39 UTC by Andrej Nemec
Modified: 2019-06-11 11:13 UTC (History)
4 users (show)

(edit)
A memory leak flaw was found in the way TigerVNC handled termination of VeNCrypt connections. A remote unauthenticated attacker could repeatedly send connection requests to the Xvnc server, causing it to consume large amounts of memory resources over time, and ultimately leading to a denial of service due to memory exhaustion.
Clone Of:
(edit)
Last Closed: 2019-06-08 03:09:49 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2017:2000 normal SHIPPED_LIVE Moderate: tigervnc and fltk security, bug fix, and enhancement update 2017-08-01 18:33:08 UTC

Description Andrej Nemec 2017-04-04 08:39:07 UTC
In TigerVNC (SSecurityVeNCrypt.cxx SSecurityVeNCrypt::SSecurityVeNCrypt), an unauthenticated client can cause a small memory leak in the server.

Upstream patch:

https://github.com/TigerVNC/tigervnc/pull/441/commits/8f3e8663b3cf57c0b62d939d6953fbfcc112aadd

Comment 1 Andrej Nemec 2017-04-04 08:54:10 UTC
Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1438704]

Comment 4 errata-xmlrpc 2017-08-01 20:51:35 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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