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LIN1021-5233 : Security Advisory - gnutls - CVE-2023-0361

Created: Feb 10, 2023    Updated: Mar 1, 2023
Resolved Date: Mar 1, 2023
Found In Version: 10.21.20.1
Fix Version: 10.21.20.17
Severity: Standard
Applicable for: Wind River Linux LTS 21
Component/s: Userspace

Description

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.

https://nvd.nist.gov/vuln/detail/CVE-2023-0361

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