CVE-2016-9941: Buffer Overflow
First published: Sat Dec 31 2016(Updated: )
Heap-based buffer overflow in rfbproto.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 containing a subrectangle outside of the client drawing area.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Libvncserver Project Libvncserver | <=0.9.10 | |
| debian/libvncserver | 0.9.13+dfsg-2+deb11u1 0.9.14+dfsg-1 | |
| debian/veyon | 4.5.3+repack1-1 4.7.5+repack1-1 4.7.5+repack1-1.2 |
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Reference Links
- 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/
- https://launchpad.net/bugs/cve/CVE-2016-9941
- https://github.com/LibVNC/libvncserver/pull/137/commits/5418e8007c248bf9668d22a8c1fa9528149b69f2
- https://security-tracker.debian.org/tracker/CVE-2016-9941
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9941
- https://nvd.nist.gov/vuln/detail/CVE-2016-9941
- https://ubuntu.com/security/CVE-2016-9941
Frequently Asked Questions
What is the vulnerability ID for this vulnerability?
The vulnerability ID for this vulnerability is CVE-2016-9941.
What is the severity level of CVE-2016-9941?
CVE-2016-9941 has a severity level of critical.
Which software versions are affected by CVE-2016-9941?
CVE-2016-9941 affects LibVNCServer versions before 0.9.11.
How does CVE-2016-9941 impact the affected software?
CVE-2016-9941 allows remote servers to cause a denial of service (application crash) or possibly execute arbitrary code through a crafted FramebufferUpdate message.
Are there any available fixes or patches for CVE-2016-9941?
Yes, updates are available for LibVNCServer to address CVE-2016-9941. Users should update to version 0.9.11 or later.
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