Bug 1790313 (CVE-2019-15693) - CVE-2019-15693 tigervnc: Heap buffer overflow in TightDecoder::FilterGradient
Summary: CVE-2019-15693 tigervnc: Heap buffer overflow in TightDecoder::FilterGradient
Keywords:
Status: NEW
Alias: CVE-2019-15693
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: 1791762 1791763 1790314
Blocks: 1790319
TreeView+ depends on / blocked
 
Reported: 2020-01-13 06:11 UTC by Pedro Sampaio
Modified: 2020-01-16 12:44 UTC (History)
4 users (show)

Fixed In Version: tigervnc 1.10.1
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Description Pedro Sampaio 2020-01-13 06:11:27 UTC
TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which occurs in TightDecoder::FilterGradient. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

Upstream patch:

https://github.com/CendioOssman/tigervnc/commit/b4ada8d0c6dac98c8b91fc64d112569a8ae5fb95

References:

https://github.com/TigerVNC/tigervnc/releases/tag/v1.10.1
https://www.openwall.com/lists/oss-security/2019/12/20/2

Comment 1 Pedro Sampaio 2020-01-13 06:11:46 UTC
Created tigervnc tracking bugs for this issue:

Affects: fedora-all [bug 1790314]


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