CVE-2014-6052

Publication date 24 September 2014

Last updated 26 May 2025

Ubuntu priority

Medium

Why this priority?

Description

The HandleRFBServerMessage function in libvncclient/rfbproto.c in LibVNCServer 0.9.9 and earlier does not check certain malloc return values, which allows remote VNC servers to cause a denial of service (application crash) or possibly execute arbitrary code by specifying a large screen size in a (1) FramebufferUpdate, (2) ResizeFrameBuffer, or (3) PalmVNCReSizeFrameBuffer message.

Read the notes from the security team

Status

Package Ubuntu Release Status
italc 20.04 LTS focal Not in release
18.04 LTS bionic
Fixed 1:3.0.1+dfsg1-1
16.04 LTS xenial
Fixed 1:2.0.2+dfsg1-4ubuntu0.1
14.04 LTS trusty Not in release
krfb 14.04 LTS trusty Not in release
12.04 LTS precise Not in release
10.04 LTS lucid Not in release
libvncserver 14.04 LTS trusty
Fixed 0.9.9+dfsg-1ubuntu1.1
12.04 LTS precise
Fixed 0.9.8.2-2ubuntu1.1
10.04 LTS lucid Ignored end of life

Notes

mdeslaur

same patches as CVE-2014-6051 krfb is only a server, this issue is client side.

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libvncserver

References

Related Ubuntu Security Notices (USN)

    • USN-2365-1
    • LibVNCServer vulnerabilities
    • 29 September 2014
    • USN-4587-1
    • iTALC vulnerabilities
    • 20 October 2020

Other references