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Vulnerability Details : CVE-2020-27672

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.
Publish Date : 2020-10-22 Last Update Date : 2021-07-21
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- CVSS Scores & Vulnerability Types

CVSS Score
6.9
Confidentiality Impact Complete (There is total information disclosure, resulting in all system files being revealed.)
Integrity Impact Complete (There is a total compromise of system integrity. There is a complete loss of system protection, resulting in the entire system being compromised.)
Availability Impact Complete (There is a total shutdown of the affected resource. The attacker can render the resource completely unavailable.)
Access Complexity Medium (The access conditions are somewhat specialized. Some preconditions must be satistified to exploit)
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of ServiceGain privileges
CWE ID 362

- Products Affected By CVE-2020-27672

# Product Type Vendor Product Version Update Edition Language
1 OS XEN XEN * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
XEN XEN 1

- References For CVE-2020-27672

http://xenbits.xen.org/xsa/advisory-345.html CONFIRM
http://www.openwall.com/lists/oss-security/2021/01/19/7
MLIST [oss-security] 20210119 Xen Security Advisory 345 v4 (CVE-2020-27672) - x86: Race condition in Xen mapping code
https://www.debian.org/security/2020/dsa-4804
DEBIAN DSA-4804
https://lists.fedoraproject.org/archives/list/[email protected]/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2/
FEDORA FEDORA-2020-6dd36a716c
http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html
SUSE openSUSE-SU-2020:1844
https://security.gentoo.org/glsa/202011-06
GENTOO GLSA-202011-06
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html
SUSE openSUSE-SU-2020:1783
https://xenbits.xen.org/xsa/advisory-345.html

- Metasploit Modules Related To CVE-2020-27672

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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