Debian Security Advisory
DLA-831-1 gtk-vnc -- LTS security update
- Date Reported:
- 20 Feb 2017
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 854450.
In Mitre's CVE dictionary: CVE-2017-5884, CVE-2017-5885.
- More information:
Josef Gajdusek discovered two vulnerabilities in gtk-vnc, a VNC viewer widget for GTK:
Fix bounds checking for RRE, hextile & copyrec encodings. This bug allowed a remote server to cause a denial of service by buffer overflow via a carefully crafted message containing subrectangles outside the drawing area.
Correctly validate color map range indexes. This bug allowed a remote server to cause a denial of service by buffer overflow via a carefully crafted message with out-of-range colour values.
For Debian 7
Wheezy, these problems have been fixed in version 0.5.0-3.1+deb7u1.
We recommend that you upgrade your gtk-vnc packages.
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