CVE-2018-0734
openssl: timing side channel attack in the DSA signature algorithm
Severity
LowRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · October 16, 2018
Updated · October 9, 2026
Description
The OpenSSL DSA signature algorithm has been shown to be vulnerable to a timing side channel attack. An attacker could use variations in the signing algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected 1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL 1.0.2q (Affected 1.0.2-1.0.2p).
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5.1CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-385 · Covert Timing Channel