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Ubuntu: USN-5965-1 (CVE-2020-26117): TigerVNC vulnerability

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Ubuntu: USN-5965-1 (CVE-2020-26117): TigerVNC vulnerability

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
09/27/2020
Created
03/29/2023
Added
03/22/2023
Modified
03/22/2023

Description

In rfb/CSecurityTLS.cxx and rfb/CSecurityTLS.java in TigerVNC before 1.11.0, viewers mishandle TLS certificate exceptions. They store the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.

Solution(s)

  • ubuntu-upgrade-tigervnc-common
  • ubuntu-upgrade-tigervnc-scraping-server
  • ubuntu-upgrade-tigervnc-standalone-server

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