Information disclosure in MatrixSSL - CVE-2018-12439
Published: June 18, 2018 / Updated: June 20, 2018
Vulnerability identifier: #VU13400
CSH Severity: Low
CVSS v4: []
CVE-ID: CVE-2018-12439
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local attacker to obtain potentially sensitive information.
The vulnerability exists in the MatrixSSL library due to a leakage of information through memory caches when the library uses a private key to create Elliptic Curve Digital Signature Algorithm (ECDSA) signatures as demonstrayed in the dsa/dsa.cpp, ec_group/ec_group.cpp, and ecdsa/ecdsa.cpp source code files. A local attacker can conduct a memory-cache side-channel attack and recover sensitive information, such ECDSA private keys, which could be used to conduct further attacks.
Affected software
MatrixSSL
How to mitigate CVE-2018-12439
Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.