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[SECURITY] [DLA 2396-1] tigervnc security update

Debian LTS Advisory DLA-2396-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/                  Roberto C. Sánchez
October 06, 2020                              https://wiki.debian.org/LTS

Package        : tigervnc
Version        : 1.7.0+dfsg-7+deb9u2
CVE ID         : CVE-2020-26117
Debian Bug     : 971272

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

We recommend that you upgrade your tigervnc packages.

For the detailed security status of tigervnc please refer to
its security tracker page at:

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

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