Rocky Linux 8 : samba (RLSA-2021:1647)

medium Nessus Plugin ID 184966

Synopsis

The remote Rocky Linux host is missing one or more security updates.

Description

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

- 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)

- 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)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

Plugin Details

Severity: Medium

ID: 184966

File Name: rocky_linux_RLSA-2021-1647.nasl

Version: 1.3

Type: local

Family: Rocky Linux Local Security Checks

Published: 11/7/2023

Updated: 1/4/2024

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

Required KB Items: Host/local_checks_enabled, Host/RockyLinux/release, Host/RockyLinux/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

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

Detections

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