Vulnerability Details CVE-2014-6053
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.369
EPSS Ranking 97.0%
CVSS Severity
CVSS v2 Score 5.0
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639
- http://secunia.com/advisories/61506
- http://secunia.com/advisories/61682
- http://ubuntu.com/usn/usn-2365-1
- http://www.debian.org/security/2014/dsa-3081
- http://www.ocert.org/advisories/ocert-2014-007.html
- http://www.openwall.com/lists/oss-security/2014/09/25/11
- https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28
- 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/q3/639
- http://secunia.com/advisories/61506
- http://secunia.com/advisories/61682
- http://ubuntu.com/usn/usn-2365-1
- http://www.debian.org/security/2014/dsa-3081
- http://www.ocert.org/advisories/ocert-2014-007.html
- http://www.openwall.com/lists/oss-security/2014/09/25/11
- https://github.com/newsoft/libvncserver/commit/6037a9074d52b1963c97cb28ea1096c7c14cbf28
- 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/
Products affected by CVE-2014-6053
-
cpe:2.3:a:libvncserver:libvncserver:*
-
cpe:2.3:o:canonical:ubuntu_linux:12.04
-
cpe:2.3:o:canonical:ubuntu_linux:14.04
-
cpe:2.3:o:debian:debian_linux:7.0