Detections
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RHEL 7 : samba (RHSA-2021:3723)
medium Nessus Plugin ID 153886
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Synopsis
The remote Red Hat host is missing one or more security updates.Description
The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3723 advisory.- samba: Missing handle permissions check in SMB1/2/3 ChangeNotify (CVE-2020-14318)
- samba: Unprivileged user can crash winbind (CVE-2020-14323)
- samba: Netlogon elevation of privilege vulnerability (Zerologon) (CVE-2020-1472)
- samba: Negative idmap cache entries can cause incorrect group entries in the Samba file server process token (CVE-2021-20254)
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.See Also
https://access.redhat.com/security/cve/CVE-2020-1472
https://access.redhat.com/security/cve/CVE-2020-14318
https://access.redhat.com/security/cve/CVE-2020-14323
https://access.redhat.com/security/cve/CVE-2021-20254
https://access.redhat.com/errata/RHSA-2021:3723
https://bugzilla.redhat.com/1879822
https://bugzilla.redhat.com/1891685
Plugin Details
Severity: Medium
ID: 153886
File Name: redhat-RHSA-2021-3723.nasl
Version: 1.14
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 10/5/2021
Updated: 3/5/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless 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: 6.8
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
CVSS Score Source: CVE-2021-20254
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:ctdb, p-cpe:/a:redhat:enterprise_linux:libsmbclient, p-cpe:/a:redhat:enterprise_linux:libsmbclient-devel, p-cpe:/a:redhat:enterprise_linux:libwbclient, p-cpe:/a:redhat:enterprise_linux:libwbclient-devel, p-cpe:/a:redhat:enterprise_linux:python3-samba, p-cpe:/a:redhat:enterprise_linux:samba, p-cpe:/a:redhat:enterprise_linux:samba-client, p-cpe:/a:redhat:enterprise_linux:samba-client-libs, p-cpe:/a:redhat:enterprise_linux:samba-common, p-cpe:/a:redhat:enterprise_linux:samba-common-libs, p-cpe:/a:redhat:enterprise_linux:samba-common-tools, p-cpe:/a:redhat:enterprise_linux:samba-devel, p-cpe:/a:redhat:enterprise_linux:samba-krb5-printing, p-cpe:/a:redhat:enterprise_linux:samba-libs, p-cpe:/a:redhat:enterprise_linux:samba-pidl, p-cpe:/a:redhat:enterprise_linux:samba-vfs-glusterfs, p-cpe:/a:redhat:enterprise_linux:samba-winbind, p-cpe:/a:redhat:enterprise_linux:samba-winbind-clients, p-cpe:/a:redhat:enterprise_linux:samba-winbind-krb5-locator, p-cpe:/a:redhat:enterprise_linux:samba-winbind-modules
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 10/5/2021
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, CVE-2021-20254