CVE-2018-10845
gnutls: HMAC-SHA-384 vulnerable to Lucky thirteen attack due to use of wrong constant
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · August 21, 2018
Updated · June 30, 2026
Description
It was found that GnuTLS's implementation of HMAC-SHA-384 was vulnerable to a Lucky Thirteen-style attack. A remote attacker could use this flaw to conduct distinguishing attacks and plain text recovery attacks via statistical analysis of timing data using crafted packets.
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 · 5.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE-327 · Use of a Broken or Risky Cryptographic Algorithm