CVE-2020-10932 : Vulnerability Insights and Analysis
Learn about CVE-2020-10932, a vulnerability in Arm Mbed TLS allowing attackers to recover the ECDSA private key. Find out how to mitigate this security risk and prevent exploitation.
CVE-2020-10932 is a security vulnerability found in Arm Mbed TLS before version 2.16.6 and 2.7.x before 2.7.15. This vulnerability allows an attacker to recover the long-term ECDSA private key through precise side-channel measurements.
Understanding CVE-2020-10932
Arm Mbed TLS versions prior to 2.16.6 and 2.7.x before 2.7.15 are susceptible to a side-channel attack that can lead to the recovery of the ECDSA private key.
What is CVE-2020-10932?
The vulnerability in CVE-2020-10932 allows attackers to exploit side-channel measurements to retrieve the long-term ECDSA private key used for signatures.
The Impact of CVE-2020-10932
This vulnerability poses a significant risk as attackers can potentially gain access to sensitive cryptographic keys, compromising the security and integrity of systems utilizing affected versions of Arm Mbed TLS.
Technical Details of CVE-2020-10932
Arm Mbed TLS before 2.16.6 and 2.7.x before 2.7.15 are affected by CVE-2020-10932.
Vulnerability Description
The vulnerability arises from the ability of attackers to recover the long-term ECDSA private key through precise side-channel measurements.
Affected Systems and Versions
- Vendor: n/a
- Product: n/a
- Versions: All versions before 2.16.6 and 2.7.x before 2.7.15 are impacted.
Exploitation Mechanism
Attackers can exploit side-channel measurements to reconstruct projective coordinates, recover bits of the ephemeral scalar, and ultimately obtain the long-term ECDSA private key.
Mitigation and Prevention
It is crucial to take immediate steps to address and prevent exploitation of CVE-2020-10932.
Immediate Steps to Take
- Update Arm Mbed TLS to version 2.16.6 or 2.7.15, which contain fixes for this vulnerability.
- Implement additional security measures to mitigate side-channel attacks.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from Arm Mbed TLS.
- Conduct security assessments to identify and address potential vulnerabilities in cryptographic implementations.
Patching and Updates
- Apply patches and updates provided by Arm Mbed TLS promptly to ensure the security of cryptographic operations.