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AlmaLinux 8 : samba (ALSA-2021:1647)

medium Nessus Plugin ID 157490

Synopsis

The remote AlmaLinux host is missing one or more security updates.

Description

The remote AlmaLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2021:1647 advisory.

 - An elevation of privilege vulnerability exists when an attacker establishes a vulnerable Netlogon secure channel connection to a domain controller, using the Netlogon Remote Protocol (MS-NRPC), aka 'Netlogon Elevation of Privilege Vulnerability'. (CVE-2020-1472)

 - A flaw was found in the way samba handled file and directory permissions. An authenticated user could use this flaw to gain access to certain file and directory information which otherwise would be unavailable to the attacker. (CVE-2020-14318)

 - A null pointer dereference flaw was found in samba's Winbind service in versions before 4.11.15, before 4.12.9 and before 4.13.1. A local user could use this flaw to crash the winbind service causing denial of service. (CVE-2020-14323)

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 packages.

See Also

https://errata.almalinux.org/8/ALSA-2021-1647.html

Plugin Details

Severity: Medium

ID: 157490

File Name: alma_linux_ALSA-2021-1647.nasl

Version: 1.9

Type: local

Published: 2/9/2022

Updated: 3/5/2024

Supported Sensors: Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.5

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

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

CVSS Score Source: CVE-2020-1472

CVSS v3

Risk Factor: Medium

Base Score: 5.5

Temporal Score: 5.3

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

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

Vulnerability Information

CPE: p-cpe:/a:alma:linux:samba, p-cpe:/a:alma:linux:python3-samba-test, p-cpe:/a:alma:linux:python3-samba, p-cpe:/a:alma:linux:samba-winbind, p-cpe:/a:alma:linux:samba-winbind-clients, p-cpe:/a:alma:linux:ctdb-tests, p-cpe:/a:alma:linux:samba-winexe, p-cpe:/a:alma:linux:samba-common-tools, p-cpe:/a:alma:linux:samba-winbind-modules, p-cpe:/a:alma:linux:samba-krb5-printing, p-cpe:/a:alma:linux:libwbclient-devel, p-cpe:/a:alma:linux:samba-winbind-krb5-locator, p-cpe:/a:alma:linux:samba-devel, p-cpe:/a:alma:linux:libwbclient, p-cpe:/a:alma:linux:samba-test-libs, p-cpe:/a:alma:linux:ctdb, p-cpe:/a:alma:linux:libsmbclient-devel, cpe:/o:alma:linux:8, p-cpe:/a:alma:linux:samba-common, p-cpe:/a:alma:linux:samba-test, p-cpe:/a:alma:linux:samba-libs, p-cpe:/a:alma:linux:samba-common-libs, p-cpe:/a:alma:linux:samba-client-libs, p-cpe:/a:alma:linux:libsmbclient, p-cpe:/a:alma:linux:samba-client, p-cpe:/a:alma:linux:samba-pidl, p-cpe:/a:alma:linux:openchange

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/18/2021

Vulnerability Publication Date: 8/11/2020

CISA Known Exploited Vulnerability Due Dates: 9/21/2020

Reference Information

CVE: CVE-2020-14318, CVE-2020-14323, CVE-2020-1472

CISA-NCAS: AA22-011A

IAVA: 2020-A-0438-S, 2020-A-0508-S