CVE-2014-6052
high
CVSS v3
—
CVSS v2
7.5
VIR risk
7.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2014-6052
Vendor advisory: cve@mitre.org — https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| debian | bookworm | fixed | 0.9.9+dfsg-6.1 |
| debian | bullseye | fixed | 0.9.9+dfsg-6.1 |
| debian | forky | fixed | 0.9.9+dfsg-6.1 |
| debian | sid | fixed | 0.9.9+dfsg-6.1 |
| debian | trixie | fixed | 0.9.9+dfsg-6.1 |
| debian | 7.0 | affected | |
| ubuntu | 12.04 | affected | |
| ubuntu | 14.04 | affected | |
Application impact
| Vendor | Product | Versions | Fixed |
|---|---|---|---|
| libvncserver | libvncserver | {"endIncluding":"0.9.9"} | |
References
- http://lists.opensuse.org/opensuse-updates/2015-12/msg00022.html
- http://seclists.org/oss-sec/2014/q3/639
- http://secunia.com/advisories/61506
- http://secunia.com/advisories/61682
- http://ubuntu.com/usn/usn-2365-1
- http://www.debian.org/security/2014/dsa-3081
- http://www.ocert.org/advisories/ocert-2014-007.html
- http://www.openwall.com/lists/oss-security/2014/09/25/11
- http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
- http://www.securityfocus.com/bid/70091
- https://github.com/newsoft/libvncserver/commit/85a778c0e45e87e35ee7199f1f25020648e8b812
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201507-07
- https://usn.ubuntu.com/4587-1/
- https://security-tracker.debian.org/tracker/CVE-2014-6052
CWEs
CWE-20
Verify integrity in audit chain (admin only). AS-IS.