Integer Overflow or Wraparound Affecting tigervnc package, versions <0:1.8.0-1.32.amzn1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN201803-TIGERVNC-1707674
- published27 Sept 2021
- disclosed1 Apr 2017
Introduced: 1 Apr 2017
CVE-2017-7395 (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 (SMsgReader.cxx SMsgReader::readClientCutText), by causing an integer overflow, an authenticated client can crash the server.
References
- http://www.securityfocus.com/bid/97305
- https://github.com/TigerVNC/tigervnc/pull/436
- https://github.com/TigerVNC/tigervnc/pull/436/commits/bf3bdac082978ca32895a4b6a123016094905689
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7395
- https://security.gentoo.org/glsa/201801-13
- https://access.redhat.com/errata/RHSA-2017:2000