CVE-2018-20020

Description

LibVNC before commit 7b1ef0ffc4815cab9a96c7278394152bdc89dc4d contains heap out-of-bound write vulnerability inside structure in VNC client code that can result remote code execution

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 16.83% Top 10%
Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory gentoo.org Vendor Advisory gentoo.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com
Affected: n/a LibVNC
Published at:
Updated at:

References

Link Tags
https://www.debian.org/security/2019/dsa-4383 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2018/12/msg00017.html third party advisory mailing list
https://usn.ubuntu.com/3877-1/ third party advisory vendor advisory
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-030-libvnc-heap-out-of-bound-write/ third party advisory
https://security.gentoo.org/glsa/201908-05 vendor advisory
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html mailing list
https://lists.debian.org/debian-lts-announce/2019/11/msg00033.html mailing list
https://security.gentoo.org/glsa/202006-06 vendor advisory
https://usn.ubuntu.com/4547-1/ vendor advisory
https://usn.ubuntu.com/4547-2/ vendor advisory
https://usn.ubuntu.com/4587-1/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-20020?
CVE-2018-20020 has been scored as a critical severity vulnerability.
How to fix CVE-2018-20020?
To fix CVE-2018-20020, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-20020 being actively exploited in the wild?
It is possible that CVE-2018-20020 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~17% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-20020?
CVE-2018-20020 affects n/a LibVNC.
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