A vulnerability was found that the response times to malformed ciphertexts in RSA-PSK ClientKeyExchange differ from response times of ciphertexts with correct PKCS#1 v1.5 padding.
https://gnutls.org/security-new.html#GNUTLS-SA-2023-10-23
https://bugzilla.redhat.com/show_bug.cgi?id=2248445
https://access.redhat.com/security/cve/CVE-2023-5981
https://access.redhat.com/errata/RHSA-2024:2094
https://access.redhat.com/errata/RHSA-2024:1383
https://access.redhat.com/errata/RHSA-2024:0533
https://access.redhat.com/errata/RHSA-2024:0451
https://access.redhat.com/errata/RHSA-2024:0399
Published: 2023-11-28
Updated: 2024-09-16
Base Score: 5.4
Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:N/A:N
Severity: Medium
Base Score: 5.9
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: Medium
Base Score: 9.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Severity: Critical