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EulerOS 2.0 SP12 : openssh (EulerOS-SA-2024-2455)

critical Nessus Plugin ID 207480

Synopsis

The remote EulerOS host is missing a security update.

Description

According to the versions of the openssh packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

 A signal handler race condition was found in OpenSSH's server (sshd), where a client does not authenticate within LoginGraceTime seconds (120 by default, 600 in old OpenSSH versions), then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal- safe, for example, syslog().(CVE-2024-6387)

Tenable has extracted the preceding description block directly from the EulerOS openssh security advisory.

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 openssh packages.

See Also

http://www.nessus.org/u?47070d27

Plugin Details

Severity: Critical

ID: 207480

File Name: EulerOS_SA-2024-2455.nasl

Version: 1.1

Type: local

Published: 9/19/2024

Updated: 9/19/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.4

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 6

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

CVSS Score Source: CVE-2024-6387

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

CVSS v4

Risk Factor: Critical

Base Score: 9.2

Threat Score: 8.2

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:openssh-server-8.8p1, p-cpe:/a:huawei:euleros:openssh-8.8p1, p-cpe:/a:huawei:euleros:openssh-clients-8.8p1, cpe:/o:huawei:euleros:2.0

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/19/2024

Vulnerability Publication Date: 5/9/2024

Reference Information

CVE: CVE-2024-6387