CVE-2014-6051: Buffer Overflow
First published: Tue Sep 30 2014(Updated: )
Integer overflow in the MallocFrameBuffer function in vncviewer.c in LibVNCServer 0.9.9 and earlier allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code via an advertisement for a large screen size, which triggers a heap-based buffer overflow.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Redhat Enterprise Linux Server Aus | =6.5 | |
| Redhat Enterprise Linux Server Eus | =6.5.z | |
| Fedoraproject Fedora | =20 | |
| Fedoraproject Fedora | =21 | |
| Libvncserver Libvncserver | <=0.9.9 | |
| Debian Debian Linux | =7.0 | |
| Oracle Solaris | =11.3 | |
| debian/libvncserver | 0.9.13+dfsg-2+deb11u1 0.9.14+dfsg-1 | |
| debian/veyon | 4.5.3+repack1-1 4.7.5+repack1-1 4.7.5+repack1-1.2 |
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Reference Links
- http://lists.fedoraproject.org/pipermail/package-announce/2014-October/139654.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-September/139445.html
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://rhn.redhat.com/errata/RHSA-2015-0113.html
- http://seclists.org/oss-sec/2014/q3/639
- http://secunia.com/advisories/61506
- 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
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- http://www.securityfocus.com/bid/70093
- https://github.com/newsoft/libvncserver/commit/045a044e8ae79db9244593fbce154cdf6e843273
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://security.gentoo.org/glsa/201612-36
- https://usn.ubuntu.com/4587-1/
- https://www.kde.org/info/security/advisory-20140923-1.txt
- https://launchpad.net/bugs/cve/CVE-2014-6051
- https://security-tracker.debian.org/tracker/CVE-2014-6051
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-6051
- https://nvd.nist.gov/vuln/detail/CVE-2014-6051
- https://ubuntu.com/security/CVE-2014-6051
Frequently Asked Questions
What is CVE-2014-6051?
CVE-2014-6051 is an integer overflow vulnerability in LibVNCServer 0.9.9 and earlier versions.
How does CVE-2014-6051 affect the software?
CVE-2014-6051 allows remote VNC servers to cause a denial of service (crash) and possibly execute arbitrary code.
Which software versions are affected by CVE-2014-6051?
LibVNCServer versions 0.9.9 and earlier are affected by CVE-2014-6051.
What is the severity of CVE-2014-6051?
CVE-2014-6051 has a severity rating of 7.5 out of 10.
How can I fix CVE-2014-6051?
Update to LibVNCServer version 1.0.0 or later.
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