Detections
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RHEL 9 : gnutls (RHSA-2024:2570)

medium Nessus Plugin ID 194840

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Synopsis

The remote Red Hat host is missing one or more security updates for gnutls.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:2570 advisory.

 - A flaw was found in GnuTLS. The Minerva attack is a cryptographic vulnerability that exploits deterministic behavior in systems like GnuTLS, leading to side-channel leaks. In specific scenarios, such as when using the GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE flag, it can result in a noticeable step in nonce size from 513 to 512 bits, exposing a potential timing side-channel. (CVE-2024-28834)

 - A flaw has been discovered in GnuTLS where an application crash can be induced when attempting to verify a specially crafted .pem bundle using the certtool --verify-chain command. (CVE-2024-28835)

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

Solution

Update the RHEL gnutls package based on the guidance in RHSA-2024:2570.

See Also

https://access.redhat.com/errata/RHSA-2024:2570

https://access.redhat.com/security/cve/CVE-2024-28834

https://access.redhat.com/security/cve/CVE-2024-28835

Plugin Details

Severity: Medium

ID: 194840

File Name: redhat-RHSA-2024-2570.nasl

Version: 1.1

Type: local

Agent: unix

Published: 4/30/2024

Updated: 5/2/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2024-28834

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:gnutls-dane, p-cpe:/a:redhat:enterprise_linux:gnutls, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:redhat:enterprise_linux:gnutls-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:gnutls-utils, p-cpe:/a:redhat:enterprise_linux:gnutls-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/30/2024

Vulnerability Publication Date: 3/21/2024

Reference Information

CVE: CVE-2024-28834, CVE-2024-28835

CWE: 200, 248

RHSA: 2024:2570