CVE-2018-20022

Description

LibVNC before 2f5b2ad1c6c99b1ac6482c95844a84d66bb52838 contains multiple weaknesses CWE-665: Improper Initialization vulnerability in VNC 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

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 5.44% Top 15%
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://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-032-libvnc-multiple-memory-leaks/ third party advisory
https://usn.ubuntu.com/3877-1/ third party advisory vendor 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://lists.debian.org/debian-lts-announce/2019/12/msg00028.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-2018-20022?
CVE-2018-20022 has been scored as a high severity vulnerability.
How to fix CVE-2018-20022?
To fix CVE-2018-20022, 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-2018-20022 being actively exploited in the wild?
It is possible that CVE-2018-20022 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-20022?
CVE-2018-20022 affects n/a LibVNC.
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