CVE-2014-6053

Name: CVE-2014-6053
Creator: NVD / NIST
Published: 2014-12-15T18:59:05.643+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 7.56%

Last modified Jun 17, 2026

CVE-2014-6053 is a vulnerability of currently unknown severity. The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.. EPSS estimates a 7.56% chance of exploitation in the next 30 days.

Description

The rfbProcessClientNormalMessage function in libvncserver/rfbserver.c in LibVNCServer 0.9.9 and earlier does not properly handle attempts to send a large amount of ClientCutText data, which allows remote attackers to cause a denial of service (memory consumption or daemon crash) via a crafted message that is processed by using a single unchecked malloc.

Metrics

EPSS Probability

7.56%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-19

Affected Software

Vendor	Product	Versions
Libvncserver	Libvncserver	<= 0.9.9
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Debian	Debian Linux	7.0

References

http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
http://secunia.com/advisories/61506
http://secunia.com/advisories/61682
http://ubuntu.com/usn/usn-2365-1Third Party Advisory
http://www.debian.org/security/2014/dsa-3081Third Party Advisory
http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
https://security.gentoo.org/glsa/201507-07
https://usn.ubuntu.com/4573-1/
https://usn.ubuntu.com/4587-1/
http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
http://seclists.org/oss-sec/2014/q3/639Mailing List, Third Party Advisory
http://secunia.com/advisories/61506
http://secunia.com/advisories/61682
http://ubuntu.com/usn/usn-2365-1Third Party Advisory
http://www.debian.org/security/2014/dsa-3081Third Party Advisory
http://www.ocert.org/advisories/ocert-2014-007.htmlThird Party Advisory, US Government Resource
http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing List, Third Party Advisory
https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28Issue Tracking, Patch
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
https://security.gentoo.org/glsa/201507-07
https://usn.ubuntu.com/4573-1/
https://usn.ubuntu.com/4587-1/

Timeline

Published: Dec 15, 2014
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2014-6053?

How severe is CVE-2014-6053?

Severity scoring for CVE-2014-6053 is pending analysis. The EPSS model estimates a 7.56% probability of exploitation in the next 30 days.

How do I fix CVE-2014-6053?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2014-6053?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST