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Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libssh (UTSA-2025-990958)

low Nessus Plugin ID 276652

Synopsis

The Unity Linux host is missing one or more security updates.

Description

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2025-990958 advisory.

 A vulnerability was found in libssh, where an uninitialized variable exists under certain conditions in the privatekey_from_file() function. This flaw can be triggered if the file specified by the filename doesn't exist and may lead to possible signing failures or heap corruption.

Tenable has extracted the preceding description block directly from the Unity Linux 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 libssh package.

See Also

https://access.redhat.com/security/cve/CVE-2025-4878

https://nvd.nist.gov/vuln/detail/CVE-2025-4878

http://www.nessus.org/u?d241a68f

Plugin Details

Severity: Low

ID: 276652

File Name: unity_linux_UTSA-2025-990958.nasl

Version: 1.1

Type: local

Published: 11/24/2025

Updated: 11/24/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Low

Base Score: 2.4

Temporal Score: 1.8

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

CVSS Score Source: CVE-2025-4878

CVSS v3

Risk Factor: Low

Base Score: 3.6

Temporal Score: 3.2

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

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

Vulnerability Information

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/25/2025

Vulnerability Publication Date: 7/3/2025

Reference Information

CVE: CVE-2025-4878