Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libvncserver | Libvncserver | <= 0.9.9 |
| Oracle | Solaris | 11.3 |
| Debian | Debian Linux | 7.0 |
| Canonical | Ubuntu Linux | 12.04 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Mailing ListThird Party Advisory
- http://secunia.com/advisories/61506Permissions RequiredThird Party Advisory
- http://secunia.com/advisories/61682Permissions RequiredThird Party Advisory
- 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 AdvisoryUS Government Resource
- http://www.openwall.com/lists/oss-security/2014/09/25/11Mailing ListThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.htmlThird Party Advisory
- http://www.securityfocus.com/bid/70091
- https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f2502064ExploitIssue TrackingPatch
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4587-1/
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
FAQ
What is CVE-2014-6052?
CVE-2014-6052 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 servi...
How severe is CVE-2014-6052?
CVE-2014-6052 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2014-6052?
Check the references section above for vendor advisories and patch information. Affected products include: Libvncserver Libvncserver, Oracle Solaris, Debian Debian Linux, Canonical Ubuntu Linux.