NULL Pointer Dereference Affecting veyon package, versions <4.1.4+repack1-1
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-DEBIAN14-VEYON-11771207
- published10 Aug 2025
- disclosed19 Dec 2018
Introduced: 19 Dec 2018
CVE-2018-20024 (opens in a new tab)How to fix?
Upgrade Debian:14 veyon to version 4.1.4+repack1-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream veyon package and not the veyon package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.
References
- https://security-tracker.debian.org/tracker/CVE-2018-20024
- https://www.debian.org/security/2019/dsa-4383
- https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html
- 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-18-034-libvnc-null-pointer-dereference/
- 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/
- http://people.ubuntu.com/~ubuntu-security/cve/CVE-2018-20024
- https://usn.ubuntu.com/3877-1/