CVE-2021-28711
First published: Wed Jan 05 2022(Updated: )
Last updated 18 February 2025
Credit: security@xen.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Xen XAPI | ||
| Debian | =9.0 | |
| Debian | =10.0 | |
| Debian | =11.0 | |
| debian/linux | 5.10.223-1 5.10.234-1 6.1.123-1 6.1.128-1 6.12.17-1 |
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Reference Links
- https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html
- https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html
- https://www.debian.org/security/2022/dsa-5050
- https://www.debian.org/security/2022/dsa-5096
- https://xenbits.xenproject.org/xsa/advisory-391.txt
- https://launchpad.net/bugs/cve/CVE-2021-28711
- https://xenbits.xen.org/xsa/advisory-391.html
- https://security-tracker.debian.org/tracker/CVE-2021-28711
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-28711
- https://nvd.nist.gov/vuln/detail/CVE-2021-28711
- https://ubuntu.com/security/CVE-2021-28711
Frequently Asked Questions
What is the severity of CVE-2021-28711?
CVE-2021-28711 is classified as a high severity vulnerability due to the potential for denial of service attacks.
How do I fix CVE-2021-28711?
To fix CVE-2021-28711, upgrade to the patched versions of the Linux packages specified in your operating system's repository.
What are the affected systems for CVE-2021-28711?
CVE-2021-28711 affects various versions of Xen and Debian Linux operating systems.
What types of attacks can CVE-2021-28711 enable?
CVE-2021-28711 can enable denial of service (DoS) attacks against guests by leveraging rogue backends.
Can CVE-2021-28711 be exploited remotely?
Yes, CVE-2021-28711 can potentially be exploited remotely if untrusted backend services are allowed to operate in the system.
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