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Gentoo: GLSA-202208-23 High: Xen Remote Code Execution Risk

gentoo
Calendar Grey August 14, 2022
Dist Gentoo Esm H88
Urgent measures required for severe Xen flaws on Gentoo systems. Patch your systems now to mitigate risks of remote exploitation.
Multiple vulnerabilities have been discovered in Xen, the worst of which could result in remote code execution (guest sandbox escape).

Summary

Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details.

Topics%20covered

Topics Covered

security advisory high severity remote execution Gentoo Linux Xen update

Resolution

All Xen users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-4.15.3"
All Xen tools users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose ">=app-emulation/xen-tools-4.15.3"

References

[ 1 ] CVE-2021-28694 https://nvd.nist.gov/vuln/detail/CVE-2021-28694 [ 2 ] CVE-2021-28695 https://nvd.nist.gov/vuln/detail/CVE-2021-28695 [ 3 ] CVE-2021-28696 https://nvd.nist.gov/vuln/detail/CVE-2021-28696 [ 4 ] CVE-2021-28697 https://nvd.nist.gov/vuln/detail/CVE-2021-28697 [ 5 ] CVE-2021-28698 https://nvd.nist.gov/vuln/detail/CVE-2021-28698 [ 6 ] CVE-2021-28699 https://nvd.nist.gov/vuln/detail/CVE-2021-28699 [ 7 ] CVE-2021-28700 https://nvd.nist.gov/vuln/detail/CVE-2021-28700 [ 8 ] CVE-2021-28701 https://nvd.nist.gov/vuln/detail/CVE-2021-28701 [ 9 ] CVE-2021-28702 https://nvd.nist.gov/vuln/detail/CVE-2021-28702 [ 10 ] CVE-2021-28710 https://nvd.nist.gov/vuln/detail/CVE-2021-28710 [ 11 ] CVE-2022-21123 https://nvd.nist.gov/vuln/detail/CVE-2022-21123 [ 12 ] CVE-2022-21125 https://nvd.nist.gov/vuln/detail/CVE-2022-21125 [ 13 ] CVE-2022-21166 https://nvd.nist.gov/vuln/detail/CVE-2022-21166 [ 14 ] CVE-2022-23...

Read the Full Advisory

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: https://security.gentoo.org/glsa/202208-23
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Concerns

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users' machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.

Severity: High
Title: Xen: Multiple Vulnerabilities
Date: August 14, 2022
Bugs: #810341, #812485, #816882, #825354, #832039, #835401, #850802
ID: 202208-23

Topics%20covered

Topics Covered

security advisory high severity remote execution Gentoo Linux Xen update

Synopsis

Multiple vulnerabilities have been discovered in Xen, the worst of which could result in remote code execution (guest sandbox escape).

Background

Xen is a bare-metal hypervisor.

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Affected Packages

------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 app-emulation/xen < 4.15.3 >= 4.15.3 2 app-emulation/xen-tools < 4.15.3 >= 4.15.3

Impact

===== Please review the referenced CVE identifiers for details.

Workaround

There is no known workaround at this time.

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