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Debian LTS Advisory ([SECURITY] [DLA 831-1] gtk-vnc security update)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Josef Gajdusek discovered two vulnerabilities in gtk-vnc, a VNC viewer widget for GTK: CVE-2017-5884 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. CVE-2017-5885 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.
Affected Software
Affected Software
gtk-vnc on Debian Linux
Detection Method
Detection Method
This check tests the installed software version using the apt package manager.
Solution
Solution
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.