Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3151
xen security update
21 September 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: xen
Publisher: Debian
Operating System: Debian GNU/Linux
Impact/Access: Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Access Confidential Data -- Existing Account
Reduced Security -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2021-28701 CVE-2021-28700 CVE-2021-28699
CVE-2021-28698 CVE-2021-28697 CVE-2021-28696
CVE-2021-28695 CVE-2021-28694
Reference: ESB-2021.3026
ESB-2021.3023
ESB-2021.2998
Original Bulletin:
http://www.debian.org/security/2021/dsa-4977
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Debian Security Advisory DSA-4977-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
September 20, 2021 https://www.debian.org/security/faq
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Package : xen
CVE ID : CVE-2021-28694 CVE-2021-28695 CVE-2021-28696 CVE-2021-28697
CVE-2021-28698 CVE-2021-28699 CVE-2021-28700 CVE-2021-28701
Multiple vulnerabilities have been discovered in the Xen hypervisor,
which could result in privilege escalation, denial of service or
information leaks.
With the end of upstream support for the 4.11 branch, the version of xen
in the oldstable distribution (buster) is no longer supported. If you
rely on security support for your Xen installation an update to the
stable distribution (bullseye) is recommended.
For the stable distribution (bullseye), these problems have been fixed in
version 4.14.3-1~deb11u1.
We recommend that you upgrade your xen packages.
For the detailed security status of xen please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/xen
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
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===========================================================================
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