Buffer overflow in Xen - CVE-2021-28706

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU58342

Buffer overflow in Xen - CVE-2021-28706

Published: November 24, 2021


Vulnerability identifier: #VU58342
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-28706
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error. A remote authenticated attacker can trigger memory corruption and cause a denial of service condition on the target system.


Affected software

Xen
Oracle VM Server for x86
xen (Debian package)
xen
xen-tools-domU-debuginfo
xen-tools-domU
xen-tools-debuginfo
xen-tools
xen-libs-debuginfo
xen-libs-debuginfo-32bit
xen-libs
xen-libs-32bit
xen-doc-html
xen-debugsource
xen-devel
xen-tools-xendomains-wait-disk
SUSE MicroOS
SUSE OpenStack Cloud Crowbar
SUSE OpenStack Cloud
HPE Helion Openstack
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP
SUSE Linux Enterprise Software Development Kit
SUSE Linux Enterprise Module for Server Applications
SUSE Linux Enterprise Module for Basesystem
Fedora

How to mitigate CVE-2021-28706

Install updates from vendor's website.

Xen - addressed in versions 4.12.0, 4.13.0, 4.15.0
xen (Debian package) - update to 4.14.3+32-g9de3671772-1~deb11u1
xen - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-tools-domU-debuginfo - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-tools-domU - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-tools-debuginfo - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-tools - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-libs-debuginfo - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-libs-debuginfo-32bit - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1
xen-libs - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-libs-32bit - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1
xen-doc-html - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1
xen-debugsource - addressed in versions 4.7.6_18-43.82.1, 4.9.4_24-3.97.1, 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-devel - addressed in versions 4.12.4_16-3.55.1, 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen-tools-xendomains-wait-disk - addressed in versions 4.13.4_02-3.40.1, 4.14.3_04-3.15.1
xen - addressed in versions 4.14.3-3.fc33, 4.14.3-3.fc34, 4.15.1-4.fc35

External References

Related Security Bulletins