Bug 1789527 (CVE-2019-15692) - CVE-2019-15692 tigervnc: Heap buffer overflow triggered from CopyRectDecoder due to incorrect value checks
Summary: CVE-2019-15692 tigervnc: Heap buffer overflow triggered from CopyRectDecoder ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2019-15692
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: 1789528 1791747 1791748 1819886 1819887
Blocks: 1790319
TreeView+ depends on / blocked
 
Reported: 2020-01-09 18:33 UTC by Guilherme de Almeida Suckevicz
Modified: 2020-09-29 19:27 UTC (History)
4 users (show)

Fixed In Version: tigervnc 1.10.1
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-04-16 22:31:49 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1497 0 None None None 2020-04-16 21:06:29 UTC
Red Hat Product Errata RHSA-2020:3875 0 None None None 2020-09-29 19:27:43 UTC

Description Guilherme de Almeida Suckevicz 2020-01-09 18:33:47 UTC 
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow. Vulnerability could be triggered from CopyRectDecoder due to incorrect value checks. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Reference and upstream commit:
https://github.com/CendioOssman/tigervnc/commit/996356b6c65ca165ee1ea46a571c32a1dc3c3821
Comment 1 Guilherme de Almeida Suckevicz 2020-01-09 18:34:03 UTC 
Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1789528]
Comment 2 Huzaifa S. Sidhpurwala 2020-01-16 12:25:36 UTC 
https://github.com/TigerVNC/tigervnc/pull/921

As per upstream " All issues require a successfully authenticated connection though."
Comment 4 errata-xmlrpc 2020-04-16 21:06:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1497 https://access.redhat.com/errata/RHSA-2020:1497
Comment 5 Product Security DevOps Team 2020-04-16 22:31:49 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-15692
Comment 6 errata-xmlrpc 2020-09-29 19:27:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2020:3875 https://access.redhat.com/errata/RHSA-2020:3875
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