Out-of-bounds Write The advisory has been revoked - it doesn't affect any version of package ssvnc (opens in a new tab)
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-UBUNTU2004-SSVNC-1013798
- published19 Dec 2018
- disclosed19 Dec 2018
Introduced: 19 Dec 2018
CVE-2018-20020 (opens in a new tab)Amendment
The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ssvnc package and not the ssvnc package as distributed by Ubuntu.
LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution
References
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-20020
- https://www.debian.org/security/2019/dsa-4383
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
- https://security-tracker.debian.org/tracker/CVE-2018-20020
- https://security.gentoo.org/glsa/202006-06
- https://security.gentoo.org/glsa/201908-05
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4547-2/
- https://usn.ubuntu.com/4587-1/
- https://usn.ubuntu.com/3877-1/