Information Exposure Affecting gnutls package, versions <0:3.6.16-6.el8_7


Severity

Recommended
medium

Based on Rocky Linux security rating.

Threat Intelligence

EPSS
0.24% (62nd percentile)

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  • Snyk IDSNYK-ROCKY8-GNUTLS-5415800
  • published9 Mar 2023
  • disclosed15 Feb 2023

Introduced: 15 Feb 2023

CVE-2023-0361  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade Rocky-Linux:8 gnutls to version 0:3.6.16-6.el8_7 or higher.
This issue was patched in RLSA-2023:1569.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gnutls package and not the gnutls package as distributed by Rocky-Linux. See How to fix? for Rocky-Linux:8 relevant fixed versions and status.

A timing side-channel in the handling of RSA ClientKeyExchange messages was discovered in GnuTLS. This side-channel can be sufficient to recover the key encrypted in the RSA ciphertext across a network in a Bleichenbacher style attack. To achieve a successful decryption the attacker would need to send a large amount of specially crafted messages to the vulnerable server. By recovering the secret from the ClientKeyExchange message, the attacker would be able to decrypt the application data exchanged over that connection.

CVSS Scores

version 3.1