Heap-based Buffer Overflow Affecting tigervnc package, versions <0:1.8.0-21.el7


Severity

Recommended
medium

Based on CentOS security rating.

Threat Intelligence

EPSS
0.24% (63rd percentile)

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  • Snyk IDSNYK-CENTOS7-TIGERVNC-2169434
  • published26 Jul 2021
  • disclosed20 Dec 2019

Introduced: 20 Dec 2019

CVE-2019-15694  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade Centos:7 tigervnc to version 0:1.8.0-21.el7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by Centos. See How to fix? for Centos:7 relevant fixed versions and status.

TigerVNC version prior to 1.10.1 is vulnerable to heap buffer overflow, which could be triggered from DecodeManager::decodeRect. Vulnerability occurs due to the signdness error in processing MemOutStream. Exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.

CVSS Scores

version 3.1