CVE-2014-6052
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.
Key facts
- CVSS score
- 7.5 (v2.0)
- Severity
- HIGH
- CVSS vector
AV:N/AC:L/Au:N/C:P/I:P/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 6.8% (94th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2014-5940)
- Published
- December 15, 2014
- NVD last modified
- June 17, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2014-5940 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.
View on the EU Vulnerability DatabaseAffected products
- canonical / ubuntu linux
- canonical / ubuntu linux
- debian / debian linux
- libvncserver / libvncserver
- oracle / solaris
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639(Mailing List, Third Party Advisory)
- http://secunia.com/advisories/61506(Permissions Required, Third Party Advisory)
- http://secunia.com/advisories/61682(Permissions Required, Third Party Advisory)
- http://ubuntu.com/usn/usn-2365-1(Third Party Advisory)
- http://www.debian.org/security/2014/dsa-3081(Third Party Advisory)
- http://www.ocert.org/advisories/ocert-2014-007.html(Third Party Advisory, US Government Resource)
- http://www.openwall.com/lists/oss-security/2014/09/25/11(Mailing List, Third Party Advisory)
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html(Third Party Advisory)
- http://www.securityfocus.com/bid/70091
- https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812(Exploit, Issue Tracking, Patch)
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4587-1/
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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