CVE-2020-27672 — Vulnetix

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CVE-2020-27672 PUBLISHED

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.

EPSS 0.04% · 11.6th percentile

Risk Scores

EPSS Score

0.04%

11.6th percentile

Affected Products

Vendor	Product	Versions
Ubuntu:16.04:LTS	xen	0, 4.5.1-0ubuntu1, 4.5.1-0ubuntu2
Ubuntu:20.04:LTS	xen	4.11.3+24-g14b62ab3e5-1ubuntu2.3, 4.9.2-0ubuntu7, 4.11.3+24-g14b62ab3e5-1ubuntu1
Ubuntu:18.04:LTS	xen	4.9.0-0ubuntu3, 4.9.0-0ubuntu4, 4.9.2-0ubuntu1

Timeline

Oct 22, 2020 CVE Published
Apr 14, 2021 EPSS Score
Jun 22, 2021 EPSS Score
Aug 23, 2021 EPSS Score
Oct 24, 2021 EPSS Score
Jan 6, 2022 EPSS Score
Feb 4, 2022 EPSS Score
Feb 25, 2022 EPSS Score
Apr 1, 2022 EPSS Score
Apr 28, 2022 EPSS Score
Jun 29, 2022 EPSS Score
Aug 31, 2022 EPSS Score

References

https://ubuntu.com/security/CVE-2020-27672 third-party-advisory
https://xenbits.xen.org/xsa/advisory-345.html third-party-advisory
https://www.cve.org/CVERecord?id=CVE-2020-27672 third-party-advisory

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