SB2019062010 - Cryptographic issues in GNU Libgcrypt
Published: June 20, 2019 Updated: August 3, 2020
Security Bulletin ID
SB2019062010
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2019-12904)
The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.
In Libgcrypt 1.8.4, the C implementation of AES is vulnerable to a flush-and-reload side-channel attack because physical addresses are available to other processes. (The C implementation is used on platforms where an assembly-language implementation is unavailable.)
Remediation
Install update from vendor's website.