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CentOS Linux 6 [TuxCare] Security Update: shadow-utils (CENTOS6:CLSA-2026:1777947090)

critical Nessus Plugin ID 362130

Synopsis

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

Description

The CentOS Linux 6 host has a package installed that is affected by a vulnerability as referenced in the TuxCare CENTOS6:CLSA-2026:1777947090 advisory.

 - In shadow before 4.5, the newusers tool could be made to manipulate internal data structures in ways unintended by the authors. Malformed input may lead to crashes (with a buffer overflow or other memory corruption) or other unspecified behaviors. This crosses a privilege boundary in, for example, certain web-hosting environments in which a Control Panel allows an unprivileged user account to create subaccounts. (CVE-2017-12424)

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 shadow-utils package based on the guidance in TuxCare advisory CENTOS6:CLSA-2026:1777947090.

See Also

https://cve.tuxcare.com/els/releases/CLSA-2026:1777947090

http://www.nessus.org/u?5d745608

Plugin Details

Severity: Critical

ID: 362130

File Name: tuxcare_centos_6_CLSA-2026-1777947090.nasl

Version: 1.1

Type: Local

Agent: unix

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 57.12

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2017-12424

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list, Host/OS/extended-third-party

Exploit Ease: No known exploits are available

Patch Publication Date: 5/5/2026

Vulnerability Publication Date: 8/4/2017

Reference Information

CVE: CVE-2017-12424

CLSA: 2026:1777947090