RHEL 8 : libssh (RHSA-2024:0538)

medium Nessus Plugin ID 189743

Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:0538 advisory.

- libssh: NULL pointer dereference during rekeying with algorithm guessing (CVE-2023-1667)

- libssh: authorization bypass in pki_verify_data_signature (CVE-2023-2283)

- ssh: Prefix truncation attack on Binary Packet Protocol (BPP) (CVE-2023-48795)

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 libssh package based on the guidance in RHSA-2024:0538.

See Also

http://www.nessus.org/u?1f4f8d6d

https://access.redhat.com/security/updates/classification/#moderate

https://bugzilla.redhat.com/show_bug.cgi?id=2182199

https://bugzilla.redhat.com/show_bug.cgi?id=2189736

https://bugzilla.redhat.com/show_bug.cgi?id=2254210

https://access.redhat.com/errata/RHSA-2024:0538

Plugin Details

Severity: Medium

ID: 189743

File Name: redhat-RHSA-2024-0538.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/29/2024

Updated: 4/23/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2023-2283

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libssh-devel, cpe:/o:redhat:rhel_eus:8.6, p-cpe:/a:redhat:enterprise_linux:libssh-config, p-cpe:/a:redhat:enterprise_linux:libssh

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/29/2024

Vulnerability Publication Date: 5/15/2023

Reference Information

CVE: CVE-2023-1667, CVE-2023-2283, CVE-2023-48795

CWE: 222, 287, 476

IAVA: 2023-A-0517-S, 2023-A-0703

RHSA: 2024:0538