CVE-2014-6052
HIGH severity · CVSS 7.5 · Improper input validation
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)7%
AV:N/AC:L/Au:N/C:P/I:P/A:P
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639Advisory
- http://secunia.com/advisories/61506Advisory
- http://secunia.com/advisories/61682Advisory
- http://ubuntu.com/usn/usn-2365-1Advisory
- http://www.debian.org/security/2014/dsa-3081Advisory
- http://www.ocert.org/advisories/ocert-2014-007.htmlAdvisory
- http://www.openwall.com/lists/oss-security/2014/09/25/11Advisory