Improper Initialization 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-RHEL8-LIBVNCSERVERDEVEL-1328594
- published26 Jul 2021
- disclosed19 Dec 2018
Introduced: 19 Dec 2018
CVE-2018-20023 (opens in a new tab)How to fix?
There is no fixed version for RHEL:8 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 RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
LibVNC before 8b06f835e259652b0ff026898014fc7297ade858 contains CWE-665: Improper Initialization vulnerability in VNC Repeater client code that allows attacker to read stack memory and can be abuse for information disclosure. Combined with another vulnerability, it can be used to leak stack memory layout and in bypassing ASLR
References
- https://access.redhat.com/security/cve/CVE-2018-20023
- 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-18-033-libvnc-memory-leak/
- 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/