Bug 1438703 (CVE-2017-7396)

Summary: CVE-2017-7396 tigervnc: SecurityServer and ClientServer memory leaks
Product: [Other] Security Response Reporter: Andrej Nemec <anemec>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: bphinz, jgrulich, slawomir, twaugh
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
A memory leak flaw was found in the way TigerVNC handled client 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.
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-10-21 11:52:21 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1438704    
Bug Blocks: 1415638, 1438705    

Description Andrej Nemec 2017-04-04 08:50:24 UTC
In TigerVNC (CConnection.cxx CConnection::CConnection), an unauthenticated client can cause a small memory leak in the server. 

Upstream patch:


Comment 1 Andrej Nemec 2017-04-04 08:54:49 UTC
Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1438704]

Comment 3 errata-xmlrpc 2017-08-01 20:52:02 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