CVE-2023-5981 MEDIUM

CVE-2023-5981: Gnutls: timing side-channel in the rsa-psk authentication

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-208
Published November 28, 2023
Last update February 25, 2026
View on NVD All CVEs

CVSS base score

5.9/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 28, 2023 CVE published
February 25, 2026 Record updated