CVE-2020-24387
7.5 · HIGHOverview
CVE-2020-24387 is a high-severity vulnerability affecting yubico yubihsm-shell. It was published on October 19, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
An issue was discovered in the yh_create_session() function of yubihsm-shell through 2.0.2. The function does not explicitly check the returned session id from the device. An invalid session id would lead to out-of-bounds read and write operations in the session array. This could be used by an attacker to cause a denial of service attack.
Remediation
Check the references section for vendor advisories and patches from yubico. Update yubihsm-shell 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 |
|---|---|---|---|
| yubico | yubihsm-shell | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2020-24387?
CVE-2020-24387 is a high-severity vulnerability affecting yubico yubihsm-shell. It was published on October 19, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2020-24387?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-24387?
Check the references section for vendor advisories and patches from yubico. Update yubihsm-shell 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-2020-24387?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-24387 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
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