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Debian LTS Advisory ([SECURITY] [DLA 831-1] gtk-vnc security update)

Information

Severity

Severity

High

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

7.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

6 years ago

Modified

Modified

5 years ago

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.

Common Vulnerabilities and Exposures (CVE)