Debian Long Term Support / LTS Security Information / 2020 / Security Information -- DLA-2396-1 tigervnc

Debian Security Advisory

DLA-2396-1 tigervnc -- LTS security update

Date Reported:

06 Oct 2020

Affected Packages:

tigervnc

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 971272.
In Mitre's CVE dictionary: CVE-2020-26117.

More information:

A vulnerability was discovered in tigernvc, a Virtual Network Computing client and server implementation. The viewer implementation mishandles TLS certificate exceptions, storing the certificates as authorities, meaning that the owner of a certificate could impersonate any server after a client had added an exception.

For Debian 9 stretch, this problem has been fixed in version 1.7.0+dfsg-7+deb9u2.

We recommend that you upgrade your tigervnc packages.

For the detailed security status of tigervnc please refer to its security tracker page at: https://security-tracker.debian.org/tracker/tigervnc

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS