SB2019092519 - Timing attack in libgcrypt
Published: September 25, 2019 Updated: January 29, 2020
Security Bulletin ID
SB2019092519
CSH Severity
Low
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 vulnerability.
1) Cryptographic issues (CVE-ID: CVE-2019-13627)
CWE-ID: CWE-310 - Cryptographic Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform timing attack.
The vulnerability exists due to an error within the libgcrypt20 cryptographic library. A remote attacker can perform ECDSA timing attack.
Remediation
Install update from vendor's website.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00060.html
- http://www.openwall.com/lists/oss-security/2019/10/02/2
- https://github.com/gpg/libgcrypt/releases/tag/libgcrypt-1.8.5
- https://lists.debian.org/debian-lts-announce/2019/09/msg00024.html
- https://minerva.crocs.fi.muni.cz/
- https://security-tracker.debian.org/tracker/CVE-2019-13627