CVE-2014-6052

critical

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

Advisories
More

http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html

http://www.openwall.com/lists/oss-security/2014/09/25/11

http://www.ocert.org/advisories/ocert-2014-007.html

http://www.debian.org/security/2014/dsa-3081

http://ubuntu.com/usn/usn-2365-1

http://secunia.com/advisories/61682

http://secunia.com/advisories/61506

http://seclists.org/oss-sec/2014/q3/639

https://usn.ubuntu.com/4587-1/

https://security.gentoo.org/glsa/201507-07

https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html

http://www.securityfocus.com/bid/70091

http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html

Details

Source: Mitre, NVD

Published: 2014-12-15

Updated: 2025-04-12

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.03524