Use After Free The advisory has been revoked - it doesn't affect any version of package libvncserver-debugsource (opens in a new tab)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-RHEL8-LIBVNCSERVERDEBUGSOURCE-1328261
- published26 Jul 2021
- disclosed19 Dec 2018
Introduced: 19 Dec 2018
CVE-2018-20019 (opens in a new tab)Amendment
The Red Hat security team deemed this advisory irrelevant for RHEL:8.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libvncserver-debugsource package and not the libvncserver-debugsource package as distributed by RHEL.
LibVNC before commit a83439b9fbe0f03c48eb94ed05729cb016f8b72f contains multiple heap out-of-bound write vulnerabilities in VNC client code that can result remote code execution
References
- https://access.redhat.com/security/cve/CVE-2018-20019
- https://www.debian.org/security/2019/dsa-4383
- https://security.gentoo.org/glsa/201908-05
- https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-029-libvnc-multiple-heap-out-of-bound-vulnerabilities/
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
- https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
- https://usn.ubuntu.com/3877-1/
- https://usn.ubuntu.com/4547-1/
- https://usn.ubuntu.com/4587-1/
- https://cert-portal.siemens.com/productcert/pdf/ssa-390195.pdf