CVE-2014-6053

libvncserver < 0.9.9 - Denial of Service via Large ClientCutText Message

Title source: llm
STIX 2.1

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.

References (15)

Core 15
Core References
Third Party Advisory, US Government Resource x_refsource_misc
http://www.ocert.org/advisories/ocert-2014-007.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/61682
Mailing List vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
Third Party Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/61506
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2014/09/25/11
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
http://seclists.org/oss-sec/2014/q3/639
Third Party Advisory vendor-advisory x_refsource_ubuntu
http://ubuntu.com/usn/usn-2365-1
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/201507-07
Third Party Advisory vendor-advisory x_refsource_debian
http://www.debian.org/security/2014/dsa-3081
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
Mailing List mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4573-1/
Vendor Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4587-1/

Scores

EPSS 0.0756
EPSS Percentile 93.9%

Details

CWE
CWE-19
Status published
Products (4)
canonical/ubuntu_linux 12.04
canonical/ubuntu_linux 14.04
debian/debian_linux 7.0
libvncserver/libvncserver < 0.9.9
Published Dec 15, 2014
Tracked Since Feb 18, 2026