CVE-2018-20024

moderate-risk

Published 2018-12-19

LibVNC before commit 4a21bbd097ef7c44bb000c3bd0907f96a10e4ce7 contains null pointer dereference in VNC client code that can result DoS.

Do I need to act?

3.7% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Libvncserver

Ubuntu Linux

Debian Linux

Debian Canonical Libvnc Project

Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18...

Mailing List https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html

https://security.gentoo.org/glsa/201908-05

https://security.gentoo.org/glsa/202006-06

Third Party Advisory https://usn.ubuntu.com/3877-1/

https://usn.ubuntu.com/4547-1/

https://usn.ubuntu.com/4547-2/

https://usn.ubuntu.com/4587-1/

Third Party Advisory https://www.debian.org/security/2019/dsa-4383

Third Party Advisory https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18...

Mailing List https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html

https://security.gentoo.org/glsa/201908-05

https://security.gentoo.org/glsa/202006-06

Third Party Advisory https://usn.ubuntu.com/3877-1/

https://usn.ubuntu.com/4547-1/

https://usn.ubuntu.com/4547-2/

and 2 more references

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moderate-risk

Severity 26/34 · High

Exploitability 7/34 · Low

Exposure 14/34 · Moderate