PT-2023-6290 · Gnutls+10 · Gnutls+10
Hubert Kario
·
Published
2023-02-14
·
Updated
2025-03-19
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CVE-2023-0361
CVSS v3.1
7.4
High
| Vector | AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
GnuTLS (affected versions not specified)
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.
Recommendations
At the moment, there is no information about a newer version that contains a fix for this vulnerability.
Exploit
Side Channel Attack
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Gnutls
Linuxmint
Red Hat
Red Os
Rocky Linux
Suse
Ubuntu