Detections
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Fedora 36 : gnutls / guile-gnutls (2023-4fc4c33f2b)

high Nessus Plugin ID 172659

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 36 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2023-4fc4c33f2b advisory.

 - 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. (CVE-2023-0361)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected gnutls and / or guile-gnutls packages.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2023-4fc4c33f2b

Plugin Details

Severity: High

ID: 172659

File Name: fedora_2023-4fc4c33f2b.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/18/2023

Updated: 8/30/2023

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

Vector: CVSS2#AV:N/AC:H/Au:N/C:C/I:C/A:N

CVSS Score Source: CVE-2023-0361

CVSS v3

Risk Factor: High

Base Score: 7.4

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:fedoraproject:fedora:36, p-cpe:/a:fedoraproject:fedora:gnutls, p-cpe:/a:fedoraproject:fedora:guile-gnutls

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/22/2023

Vulnerability Publication Date: 2/13/2023

Reference Information

CVE: CVE-2023-0361