Information disclosure in libtomcrypt - CVE-2018-12437

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Main Vulnerability Database Vulnerabilities #VU13399

Information disclosure in libtomcrypt - CVE-2018-12437

Published: June 20, 2018 / Updated: June 20, 2018


Vulnerability identifier: #VU13399
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2018-12437
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability: No public exploit available
Vendor: LibTom
Affected software:
libtomcrypt

Detailed vulnerability description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists in the libtomcrypt 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. 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.


How to mitigate CVE-2018-12437

Cybersecurity Help is currently unaware of any solutions addressing the vulnerability.

Sources