Vulnerability Description
Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted FramebufferUpdate message with the Ultra type tile, such that the LZO payload decompressed length exceeds what is specified by the tile dimensions.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libvncserver Project | Libvncserver | 0.9.10 |
Related Weaknesses (CWE)
References
- http://www.debian.org/security/2017/dsa-3753
- http://www.securityfocus.com/bid/95170
- https://github.com/LibVNC/libvncserver/pull/137
- https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201702-24
- https://usn.ubuntu.com/4587-1/
- http://www.debian.org/security/2017/dsa-3753
- http://www.securityfocus.com/bid/95170
- https://github.com/LibVNC/libvncserver/pull/137
- https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://security.gentoo.org/glsa/201702-24
- https://usn.ubuntu.com/4587-1/
FAQ
What is CVE-2016-9942?
CVE-2016-9942 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Heap-based buffer overflow in ultra.c in LibVNCClient in LibVNCServer before 0.9.11 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code via a craf...
How severe is CVE-2016-9942?
CVE-2016-9942 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2016-9942?
Check the references section above for vendor advisories and patch information. Affected products include: Libvncserver Project Libvncserver.