Improper Input Validation Affecting tigervnc package, versions <0:1.8.0-1.32.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.28% (69th percentile)

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  • Snyk IDSNYK-AMZN201803-TIGERVNC-1707975
  • published27 Sept 2021
  • disclosed1 Apr 2017

Introduced: 1 Apr 2017

CVE-2017-7394  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 tigervnc to version 0:1.8.0-1.32.amzn1 or higher.
This issue was patched in ALAS-2017-879.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tigervnc package and not the tigervnc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

In TigerVNC 1.7.1 (SSecurityPlain.cxx SSecurityPlain::processMsg), unauthenticated users can crash the server by sending long usernames.