Detections
Analytics

Slackware Linux 15.0 / current gnutls Vulnerability (SSA:2023-041-01)

high Nessus Plugin ID 171367

Language:

Synopsis

The remote Slackware Linux host is missing a security update to gnutls.

Description

The version of gnutls installed on the remote host is prior to 3.7.9. It is, therefore, affected by a vulnerability as referenced in the SSA:2023-041-01 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

Upgrade the affected gnutls package.

Plugin Details

Severity: High

ID: 171367

File Name: Slackware_SSA_2023-041-01.nasl

Version: 1.4

Type: local

Published: 2/10/2023

Updated: 9/4/2023

Supported Sensors: 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: p-cpe:/a:slackware:slackware_linux:gnutls, cpe:/o:slackware:slackware_linux, cpe:/o:slackware:slackware_linux:15.0

Required KB Items: Host/local_checks_enabled, Host/Slackware/release, Host/Slackware/packages

Exploit Available: true

Exploit Ease: Exploits are available

Reference Information

CVE: CVE-2023-0361