CVE-2021-20288
7.2 · HIGHOverview
CVE-2021-20288 is a high-severity vulnerability affecting linuxfoundation ceph. It was published on April 15, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
An authentication flaw was found in ceph in versions before 14.2.20. When the monitor handles CEPHX_GET_AUTH_SESSION_KEY requests, it doesn't sanitize other_keys, allowing key reuse. An attacker who can request a global_id can exploit the ability of any user to request a global_id previously associated with another user, as ceph does not force the reuse of old keys to generate new ones. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Remediation
Check the references section for vendor advisories and patches from linuxfoundation. Update ceph to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linuxfoundation | ceph | >= 0, < 14.2.21 | Affected |
References
Frequently Asked Questions
What is CVE-2021-20288?
CVE-2021-20288 is a high-severity vulnerability affecting linuxfoundation ceph. It was published on April 15, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-20288?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-20288?
Check the references section for vendor advisories and patches from linuxfoundation. Update ceph to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-20288?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-20288 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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