CVE-2020-10932
4.7 · MEDIUMOverview
CVE-2020-10932 is a medium-severity vulnerability affecting arm mbed_tls. It was published on April 15, 2020 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
An issue was discovered in Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15. An attacker that can get precise enough side-channel measurements can recover the long-term ECDSA private key by (1) reconstructing the projective coordinate of the result of scalar multiplication by exploiting side channels in the conversion to affine coordinates; (2) using an attack described by Naccache, Smart, and Stern in 2003 to recover a few bits of the ephemeral scalar from those projective coordinates via several measurements; and (3) using a lattice attack to get from there to the long-term ECDSA private key used for the signatures. Typically an attacker would have sufficient access when attacking an SGX enclave and controlling the untrusted OS.
Remediation
Check the references section for vendor advisories and patches from arm. Update mbed_tls 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 |
|---|---|---|---|
| arm | mbed_tls | >= 2.7.0, < 2.7.15 | Affected |
| trustedfirmware | mbed_tls | >= 2.16.0, < 2.16.6 | Affected |
References
Frequently Asked Questions
What is CVE-2020-10932?
CVE-2020-10932 is a medium-severity vulnerability affecting arm mbed_tls. It was published on April 15, 2020 and has a CVSS 3.1 base score of 4.7 (MEDIUM).
How severe is CVE-2020-10932?
This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2020-10932?
Check the references section for vendor advisories and patches from arm. Update mbed_tls 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-2020-10932?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-10932 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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