Heap-based Buffer Overflow Affecting libvncserver-devel package, versions *
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-CENTOS7-LIBVNCSERVERDEVEL-1972489
- published26 Jul 2021
- disclosed14 Nov 2016
Introduced: 14 Nov 2016
CVE-2016-9942 (opens in a new tab)How to fix?
There is no fixed version for Centos:7 libvncserver-devel.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libvncserver-devel package and not the libvncserver-devel package as distributed by Centos.
See How to fix? for Centos:7 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://www.securityfocus.com/bid/95170
- https://github.com/LibVNC/libvncserver/pull/137
- https://github.com/LibVNC/libvncserver/releases/tag/LibVNCServer-0.9.11
- https://access.redhat.com/security/cve/CVE-2016-9942
- http://www.debian.org/security/2017/dsa-3753
- https://security.gentoo.org/glsa/201702-24
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://usn.ubuntu.com/4587-1/