Vulnerability CVE-2021-23192

Vulnerability Name:

CVE-2021-23192 (CCN-213210)

Assigned:

2021-11-09

Published:

2021-11-09

Updated:

2022-08-29

Summary:

A flaw was found in the way samba implemented DCE/RPC. If a client to a Samba server sent a very large DCE/RPC request, and chose to fragment it, an attacker could replace later fragments with their own data, bypassing the signature requirements.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
6.6 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): High Availibility (A): None

4.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
4.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): None

4.8 Medium (REDHAT CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
4.2 Medium (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:U/RC:R)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): Low Integrity (I): Low Availibility (A): None

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): Partial Availibility (A): None

4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): High Athentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

Vulnerability Type:

CWE-noinfo

Vulnerability Consequences:

Bypass Security

References:

Source: MITRE
Type: CNA
CVE-2021-23192

Source: CCN
Type: Red Hat Bugzilla - Bug 2019666
CVE-2021-23192 samba: Subsequent DCE/RPC fragment injection vulnerability

Source: MISC
Type: Issue Tracking, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2019666

Source: XF
Type: UNKNOWN
samba-cve202123192-sec-bypass(213210)

Source: MISC
Type: Third Party Advisory
https://ubuntu.com/security/CVE-2021-23192

Source: CCN
Type: IBM Security Bulletin 6565039 (Spectrum Scale)
A vulnerability in Samba affects IBM Spectrum Scale SMB protocol access method (CVE-2021-23192)

Source: CCN
Type: IBM Security Bulletin 6596981 (Spectrum Protect Plus)
Vulnerabilities in Samba, OpenSSL, Python, and XStream affect IBM Spectrum Protect Plus (CVE-2021-20254, CVE-2021-3712, CVE-2021-43859, CVE-2022-0778, CVE-2020-25717, CVE-2021-23192, CVE-2021-3733)

Source: CCN
Type: Samba Web site
Samba

Source: MISC
Type: Patch, Vendor Advisory
https://www.samba.org/samba/security/CVE-2021-23192.html

Vulnerable Configuration:

Configuration 1:

cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.15.0 and < 4.15.2)

OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.14.0 and < 4.14.10)

OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.10.0 and < 4.13.14)

Configuration RedHat 1:

cpe:/a:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 2:

cpe:/a:redhat:enterprise_linux:8::appstream:*:*:*:*:*

Configuration RedHat 3:

cpe:/a:redhat:enterprise_linux:8::crb:*:*:*:*:*

Configuration RedHat 4:

cpe:/o:redhat:enterprise_linux:8:*:*:*:*:*:*:*

Configuration RedHat 5:

cpe:/o:redhat:enterprise_linux:8::baseos:*:*:*:*:*

Configuration CCN 1:

cpe:/a:samba:samba:-:*:*:*:*:*:*:*

AND

cpe:/a:ibm:spectrum_protect_plus:10.1.0:*:*:*:*:*:*:*

OR cpe:/a:ibm:spectrum_scale:5.1.0:*:*:*:*:*:*:*

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:7682	P	libtiff-devel-4.0.9-150000.45.25.1 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7661	P	libsamba-errors-devel-4.13.13+git.539.fdbc44a8598-3.20.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7663	P	libseccomp-devel-2.5.3-150400.2.4 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:7662	P	libsamba-policy-devel-4.17.7+git.330.4057cd7a27a-150500.1.2 on GA media (Moderate)	2023-06-12
oval:org.opensuse.security:def:807	P	Security update for python3 (Important)	2022-10-06
oval:org.opensuse.security:def:3708	P	Security update for git (Important)	2022-07-26
oval:org.opensuse.security:def:3072	P	fuse-2.9.3-6.3.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3524	P	hyper-v-7-7.5 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:3071	P	ft2demos-2.6.3-7.15.1 on GA media (Moderate)	2022-06-28
oval:org.opensuse.security:def:94636	P	libfreebl3-3.68.3-150400.1.7 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:94701	P	libsamba-errors-devel-4.13.13+git.539.fdbc44a8598-3.20.2 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:94702	P	libsamba-policy-devel-4.15.5+git.328.f1f29505d84-150400.1.44 on GA media (Moderate)	2022-06-22
oval:org.opensuse.security:def:102147	P	Security update for python-libxml2-python (Important)	2022-03-10
oval:org.opensuse.security:def:112126	P	ctdb-4.15.2+git.193.a4d6307f1fd-1.1 on GA media (Moderate)	2022-01-17
oval:com.redhat.rhsa:def:20215082	P	RHSA-2021:5082: samba security update (Important)	2021-12-13
oval:org.opensuse.security:def:111130	P	Security update for samba (Important)	2021-11-15
oval:org.opensuse.security:def:73735	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:5886	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:99694	P	(Important)	2021-11-10
oval:org.opensuse.security:def:109321	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:96184	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:67313	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:118412	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:76382	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:101538	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:34587	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:102874	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:64613	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:4284	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:73919	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:1576	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:6224	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:100013	P	(Important)	2021-11-10
oval:org.opensuse.security:def:109540	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:101349	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:67314	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:118636	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:76532	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:42238	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:8374	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:102137	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:99159	P	(Important)	2021-11-10
oval:org.opensuse.security:def:108015	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:95434	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:64797	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:5148	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:76043	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:1740	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:6225	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:100349	P	(Important)	2021-11-10
oval:org.opensuse.security:def:19616	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:111781	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:68752	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:76551	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:8396	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:102298	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:99431	P	(Important)	2021-11-10
oval:org.opensuse.security:def:108813	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:95942	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:66975	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:117529	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:76381	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:100678	P	(Important)	2021-11-10
oval:org.opensuse.security:def:26161	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:102655	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:111782	P	Security update for samba (Important)	2021-11-10
oval:org.opensuse.security:def:68771	P	Security update for samba and ldb (Important)	2021-11-10
oval:org.opensuse.security:def:60410	P	Security update for samba (Important)	2021-11-10

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