TigerVNC: Buffer overflow — GLSA 201702-19

A buffer overflow in TigerVNC might allow remote attackers to execute arbitrary code.

Affected Packages

net-misc/tigervnc on all architectures
Affected versions < 1.7.1
Unaffected versions >= 1.7.1

Background

TigerVNC is a high-performance VNC server/client.

Description

A buffer overflow vulnerability in ModifiablePixelBuffer::fillRect in vncviewer was found.

Impact

A remote attacker, utilizing a malicious VNC server, could execute arbitrary code with the privileges of the user running the client or cause a Denial of Service condition.

Workaround

There is no known workaround at this time.

Resolution

All TigerVNC users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose ">=net-misc/tigervnc-1.7.1"
 

References

Release Date
February 20, 2017

Latest Revision
February 20, 2017: 1

Severity
normal

Exploitable
remote

Bugzilla entries