Out-of-Bounds Affecting libvncserver package, versions <0.9.10+dfsg-3ubuntu0.16.10.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-UBUNTU1610-LIBVNCSERVER-316779
- published31 Dec 2016
- disclosed31 Dec 2016
Introduced: 31 Dec 2016
CVE-2016-9942 (opens in a new tab)How to fix?
Upgrade Ubuntu:16.10 libvncserver to version 0.9.10+dfsg-3ubuntu0.16.10.1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libvncserver package and not the libvncserver package as distributed by Ubuntu.
See How to fix? for Ubuntu:16.10 relevant fixed versions and status.
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.
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2016-9942
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9942
- http://www.debian.org/security/2017/dsa-3753
- https://security-tracker.debian.org/tracker/CVE-2016-9942
- https://security.gentoo.org/glsa/201702-24
- 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
- http://www.securityfocus.com/bid/95170
- https://usn.ubuntu.com/4587-1/