CVE-2014-6052

HIGH 7.5CVE-2014-6052 · Published 15/12/2014 · updated 17/06/2026

In short

CVE-2014-6052 is a HIGH (CVSS 7.5) vulnerability affecting libvncserver (libvncserver).
Chance of exploitation in the next 30 days (EPSS): 6.8%, higher than 94.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
libvncserver libvncserver	`≤ 0.9.9`	No fix yet

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.

References

lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
seclists.org/oss-sec/2014/q3/639 · Mailing List
secunia.com/advisories/61506 · Permissions Required
secunia.com/advisories/61682 · Permissions Required
ubuntu.com/usn/usn-2365-1 · Third Party Advisory
debian.org/security/2014/dsa-3081 · Third Party Advisory
ocert.org/advisories/ocert-2014-007.html · Third Party Advisory
openwall.com/lists/oss-security/2014/09/25/11 · Mailing List
oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html · Third Party Advisory
securityfocus.com/bid/70091
newsoft/libvncserver commit 85a778c · Exploit
lists.debian.org/debian-lts-announce/2019/10/msg00042.html

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Package

Affected versions

Patched versions

libvncserver

≤ 0.9.9

No fix yet

Description

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