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NewStart CGSL CORE 5.04 / MAIN 5.04 : samba Vulnerability (NS-SA-2021-0114)

medium Nessus Plugin ID 154613

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Synopsis

The remote NewStart CGSL host is affected by a vulnerability.

Description

The remote NewStart CGSL host, running version CORE 5.04 / MAIN 5.04, has samba packages installed that are affected by a vulnerability:

 - A flaw was found in samba. The Samba smbd file server must map Windows group identities (SIDs) into unix group ids (gids). The code that performs this had a flaw that could allow it to read data beyond the end of the array in the case where a negative cache entry had been added to the mapping cache. This could cause the calling code to return those values into the process token that stores the group membership for a user. The highest threat from this vulnerability is to data confidentiality and integrity.
 (CVE-2021-20254)

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

Solution

Upgrade the vulnerable CGSL samba packages. Note that updated packages may not be available yet. Please contact ZTE for more information.

See Also

http://security.gd-linux.com/notice/NS-SA-2021-0114

http://security.gd-linux.com/info/CVE-2021-20254

Plugin Details

Severity: Medium

ID: 154613

File Name: newstart_cgsl_NS-SA-2021-0114_samba.nasl

Version: 1.3

Type: local

Published: 10/28/2021

Updated: 1/26/2022

Supported Sensors: 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:zte:cgsl_core:ctdb, p-cpe:/a:zte:cgsl_core:ctdb-tests, p-cpe:/a:zte:cgsl_core:libsmbclient, p-cpe:/a:zte:cgsl_core:libsmbclient-devel, p-cpe:/a:zte:cgsl_core:libwbclient, p-cpe:/a:zte:cgsl_core:libwbclient-devel, p-cpe:/a:zte:cgsl_core:samba, p-cpe:/a:zte:cgsl_core:samba-client, p-cpe:/a:zte:cgsl_core:samba-client-libs, p-cpe:/a:zte:cgsl_core:samba-common, p-cpe:/a:zte:cgsl_core:samba-common-libs, p-cpe:/a:zte:cgsl_core:samba-common-tools, p-cpe:/a:zte:cgsl_core:samba-dc, p-cpe:/a:zte:cgsl_core:samba-dc-libs, p-cpe:/a:zte:cgsl_core:samba-debuginfo, p-cpe:/a:zte:cgsl_core:samba-test-libs, p-cpe:/a:zte:cgsl_core:samba-vfs-glusterfs, p-cpe:/a:zte:cgsl_core:samba-winbind, p-cpe:/a:zte:cgsl_core:samba-winbind-clients, p-cpe:/a:zte:cgsl_core:samba-winbind-krb5-locator, p-cpe:/a:zte:cgsl_core:samba-winbind-modules, p-cpe:/a:zte:cgsl_main:ctdb, p-cpe:/a:zte:cgsl_main:ctdb-tests, p-cpe:/a:zte:cgsl_main:libsmbclient, p-cpe:/a:zte:cgsl_main:libsmbclient-devel, p-cpe:/a:zte:cgsl_main:libwbclient, p-cpe:/a:zte:cgsl_main:libwbclient-devel, p-cpe:/a:zte:cgsl_main:samba, p-cpe:/a:zte:cgsl_main:samba-client, p-cpe:/a:zte:cgsl_main:samba-client-libs, p-cpe:/a:zte:cgsl_main:samba-common, p-cpe:/a:zte:cgsl_main:samba-common-libs, p-cpe:/a:zte:cgsl_main:samba-common-tools, p-cpe:/a:zte:cgsl_main:samba-dc, p-cpe:/a:zte:cgsl_main:samba-dc-libs, p-cpe:/a:zte:cgsl_main:samba-debuginfo, p-cpe:/a:zte:cgsl_main:samba-devel, p-cpe:/a:zte:cgsl_main:samba-krb5-printing, p-cpe:/a:zte:cgsl_main:samba-libs, p-cpe:/a:zte:cgsl_main:samba-pidl, p-cpe:/a:zte:cgsl_main:samba-python, p-cpe:/a:zte:cgsl_main:samba-python-test, p-cpe:/a:zte:cgsl_main:samba-test, p-cpe:/a:zte:cgsl_main:samba-test-libs, p-cpe:/a:zte:cgsl_main:samba-vfs-glusterfs, p-cpe:/a:zte:cgsl_main:samba-winbind, p-cpe:/a:zte:cgsl_main:samba-winbind-clients, p-cpe:/a:zte:cgsl_main:samba-winbind-krb5-locator, p-cpe:/a:zte:cgsl_main:samba-winbind-modules, cpe:/o:zte:cgsl_core:5, cpe:/o:zte:cgsl_main:5, p-cpe:/a:zte:cgsl_core:samba-devel, p-cpe:/a:zte:cgsl_core:samba-krb5-printing, p-cpe:/a:zte:cgsl_core:samba-libs, p-cpe:/a:zte:cgsl_core:samba-pidl, p-cpe:/a:zte:cgsl_core:samba-python, p-cpe:/a:zte:cgsl_core:samba-python-test, p-cpe:/a:zte:cgsl_core:samba-test

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/24/2021

Vulnerability Publication Date: 4/29/2021

Reference Information

CVE: CVE-2021-20254

IAVA: 2021-A-0208-S