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EulerOS Virtualization 2.12.1 : openssh (EulerOS-SA-2024-2756)

high Nessus Plugin ID 209761

Synopsis

The remote EulerOS Virtualization host is missing a security update.

Description

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

 A race condition vulnerability was discovered in how signals are handled by OpenSSH's server (sshd). If a remote attacker does not authenticate within a set time period, then sshd's SIGALRM handler is called asynchronously. However, this signal handler calls various functions that are not async-signal-safe, for example, syslog(). As a consequence of a successful attack, in the worst case scenario, an attacker may be able to perform a remote code execution (RCE) as an unprivileged user running the sshd server.(CVE-2024-6409)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization 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?b093bffe

Plugin Details

Severity: High

ID: 209761

File Name: EulerOS_SA-2024-2756.nasl

Version: 1.1

Type: local

Published: 10/27/2024

Updated: 10/27/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 8.0

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

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

CVSS Score Source: CVE-2024-6409

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: cpe:/o:huawei:euleros:uvp:2.12.1, p-cpe:/a:huawei:euleros:openssh-8.8p1, p-cpe:/a:huawei:euleros:openssh-clients-8.8p1, p-cpe:/a:huawei:euleros:openssh-server-8.8p1

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/23/2024

Vulnerability Publication Date: 7/3/2024

Reference Information

CVE: CVE-2024-6409