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SUSE SLES15 Security Update : samba (SUSE-SU-2021:1498-1)

medium Nessus Plugin ID 149270

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Synopsis

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

Description

This update for samba fixes the following issues :

CVE-2021-20277: Fixed an out of bounds read in ldb_handler_fold (bsc#1183574).

CVE-2021-20254: Fixed a buffer overrun in sids_to_unixids() (bsc#1184677).

CVE-2020-27840: Fixed an unauthenticated remote heap corruption via bad DNs (bsc#1183572).

Avoid free'ing our own pointer in memcache when memcache_trim attempts to reduce cache size (bsc#1179156).

s3-libads: use dns name to open a ldap session (bsc#1184310).

Adjust smbcacls '--propagate-inheritance' feature to align with upstream (bsc#1178469).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Manager Server 4.0 :

zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Server-4.0-2021-1498=1

SUSE Manager Retail Branch Server 4.0 :

zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Retail-Branch-Server-4.0-2021-1498=1

SUSE Manager Proxy 4.0 :

zypper in -t patch SUSE-SLE-Product-SUSE-Manager-Proxy-4.0-2021-1498=1

SUSE Linux Enterprise Server for SAP 15-SP1 :

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP1-2021-1498=1

SUSE Linux Enterprise Server 15-SP1-LTSS :

zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-LTSS-2021-1498=1

SUSE Linux Enterprise Server 15-SP1-BCL :

zypper in -t patch SUSE-SLE-Product-SLES-15-SP1-BCL-2021-1498=1

SUSE Linux Enterprise High Performance Computing 15-SP1-LTSS :

zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-LTSS-2021-1498=1

SUSE Linux Enterprise High Performance Computing 15-SP1-ESPOS :

zypper in -t patch SUSE-SLE-Product-HPC-15-SP1-ESPOS-2021-1498=1

SUSE Linux Enterprise High Availability 15-SP1 :

zypper in -t patch SUSE-SLE-Product-HA-15-SP1-2021-1498=1

SUSE Enterprise Storage 6 :

zypper in -t patch SUSE-Storage-6-2021-1498=1

SUSE CaaS Platform 4.0 :

To install this update, use the SUSE CaaS Platform 'skuba' tool. I will inform you if it detects new updates and let you then trigger updating of the complete cluster in a controlled way.

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1178469

https://bugzilla.suse.com/show_bug.cgi?id=1179156

https://bugzilla.suse.com/show_bug.cgi?id=1183572

https://bugzilla.suse.com/show_bug.cgi?id=1183574

https://bugzilla.suse.com/show_bug.cgi?id=1184310

https://bugzilla.suse.com/show_bug.cgi?id=1184677

https://www.suse.com/security/cve/CVE-2020-27840/

https://www.suse.com/security/cve/CVE-2021-20254/

https://www.suse.com/security/cve/CVE-2021-20277/

http://www.nessus.org/u?d147e9bc

Plugin Details

Severity: Medium

ID: 149270

File Name: suse_SU-2021-1498-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 5/5/2021

Updated: 1/26/2022

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 3.6

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

CVSS Score Source: CVE-2021-20254

CVSS v3

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:libsmbldap2-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-policy0-python3, p-cpe:/a:novell:suse_linux:libndr-standard0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libtevent-util0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsmbldap2-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libnetapi0, p-cpe:/a:novell:suse_linux:samba-client-debuginfo, p-cpe:/a:novell:suse_linux:libdcerpc-samr0, p-cpe:/a:novell:suse_linux:libsamba-errors0, p-cpe:/a:novell:suse_linux:libsamba-errors0-debuginfo, p-cpe:/a:novell:suse_linux:libndr0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libndr-nbt-devel, p-cpe:/a:novell:suse_linux:libsmbclient0-debuginfo, p-cpe:/a:novell:suse_linux:samba-python3-debuginfo, p-cpe:/a:novell:suse_linux:samba-libs, p-cpe:/a:novell:suse_linux:libndr-standard0, p-cpe:/a:novell:suse_linux:libndr-standard0-debuginfo, p-cpe:/a:novell:suse_linux:libwbclient0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-passdb0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libdcerpc0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-util-devel, p-cpe:/a:novell:suse_linux:libsmbconf0-debuginfo, p-cpe:/a:novell:suse_linux:libndr-krb5pac0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-util0, p-cpe:/a:novell:suse_linux:libsmbconf-devel, p-cpe:/a:novell:suse_linux:libtevent-util0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-credentials0-debuginfo, p-cpe:/a:novell:suse_linux:libdcerpc-samr0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-errors0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsmbclient-devel, p-cpe:/a:novell:suse_linux:libwbclient0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:samba-libs-python3-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-credentials0, p-cpe:/a:novell:suse_linux:samba-winbind-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-hostconfig0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-credentials0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-policy0-debuginfo, p-cpe:/a:novell:suse_linux:samba-python, p-cpe:/a:novell:suse_linux:libdcerpc0, p-cpe:/a:novell:suse_linux:libsamdb0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:samba-libs-python, p-cpe:/a:novell:suse_linux:libsamba-policy-python3-devel, p-cpe:/a:novell:suse_linux:libsmbconf0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-util0-debuginfo, p-cpe:/a:novell:suse_linux:samba-winbind, p-cpe:/a:novell:suse_linux:libsamba-hostconfig0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-errors-devel, p-cpe:/a:novell:suse_linux:samba-libs-python-debuginfo, p-cpe:/a:novell:suse_linux:libnetapi0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-credentials-devel, p-cpe:/a:novell:suse_linux:samba-client, p-cpe:/a:novell:suse_linux:samba-libs-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-hostconfig-devel, p-cpe:/a:novell:suse_linux:libsamba-passdb0, p-cpe:/a:novell:suse_linux:libsamdb-devel, p-cpe:/a:novell:suse_linux:libndr-nbt0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-policy-devel, p-cpe:/a:novell:suse_linux:libndr-nbt0, p-cpe:/a:novell:suse_linux:libndr-standard-devel, p-cpe:/a:novell:suse_linux:libsamba-hostconfig0, p-cpe:/a:novell:suse_linux:libwbclient0, p-cpe:/a:novell:suse_linux:samba-python-debuginfo, p-cpe:/a:novell:suse_linux:libndr-nbt0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-passdb-devel, p-cpe:/a:novell:suse_linux:libsamba-util0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libdcerpc0-debuginfo, p-cpe:/a:novell:suse_linux:libdcerpc-binding0, p-cpe:/a:novell:suse_linux:libsmbldap-devel, p-cpe:/a:novell:suse_linux:samba, p-cpe:/a:novell:suse_linux:libdcerpc-binding0-debuginfo, p-cpe:/a:novell:suse_linux:samba-dsdb-modules-debuginfo, p-cpe:/a:novell:suse_linux:libndr-krb5pac0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:samba-ad-dc, p-cpe:/a:novell:suse_linux:libndr-devel, p-cpe:/a:novell:suse_linux:samba-python3, cpe:/o:novell:suse_linux:15, p-cpe:/a:novell:suse_linux:libnetapi0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-passdb0-debuginfo, p-cpe:/a:novell:suse_linux:libnetapi-devel, p-cpe:/a:novell:suse_linux:samba-ad-dc-debuginfo, p-cpe:/a:novell:suse_linux:libtevent-util0, p-cpe:/a:novell:suse_linux:libdcerpc-samr-devel, p-cpe:/a:novell:suse_linux:libndr0-debuginfo, p-cpe:/a:novell:suse_linux:libsamba-policy0, p-cpe:/a:novell:suse_linux:libsmbldap2, p-cpe:/a:novell:suse_linux:libtevent-util-devel, p-cpe:/a:novell:suse_linux:samba-core-devel, p-cpe:/a:novell:suse_linux:samba-libs-debuginfo, p-cpe:/a:novell:suse_linux:libndr-krb5pac0, p-cpe:/a:novell:suse_linux:samba-debugsource, p-cpe:/a:novell:suse_linux:libndr-krb5pac-devel, p-cpe:/a:novell:suse_linux:samba-winbind-debuginfo, p-cpe:/a:novell:suse_linux:libsamdb0-debuginfo, p-cpe:/a:novell:suse_linux:libsmbclient0, p-cpe:/a:novell:suse_linux:libsamdb0, p-cpe:/a:novell:suse_linux:libdcerpc-binding0-32bit-debuginfo, p-cpe:/a:novell:suse_linux:libndr0, p-cpe:/a:novell:suse_linux:libsamba-policy0-python3-debuginfo, p-cpe:/a:novell:suse_linux:samba-libs-python3, p-cpe:/a:novell:suse_linux:libdcerpc-devel, p-cpe:/a:novell:suse_linux:samba-dsdb-modules, p-cpe:/a:novell:suse_linux:libsmbconf0, p-cpe:/a:novell:suse_linux:libwbclient-devel, p-cpe:/a:novell:suse_linux:samba-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/4/2021

Vulnerability Publication Date: 5/5/2021

Reference Information

CVE: CVE-2020-27840, CVE-2021-20254, CVE-2021-20277

IAVA: 2021-A-0208-S