Vulnerability CVE-2022-2031

Vulnerability Name:

CVE-2022-2031 (CCN-232305)

Assigned:

2022-07-27

Published:

2022-07-27

Updated:

2022-08-31

Summary:

A flaw was found in Samba. The security vulnerability occurs when KDC and the kpasswd service share a single account and set of keys, allowing them to decrypt each other's tickets. A user who has been requested to change their password, can exploit this flaw to obtain and use tickets to other services.

CVSS v3 Severity:

8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

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

5.4 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)
4.7 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C)

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

CVSS v2 Severity:

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

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

Vulnerability Type:

CWE-287

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2022-2031

Source: XF
Type: UNKNOWN
samba-cve20222031-priv-esc(232305)

Source: CCN
Type: Samba Web site
CVE-2022-2031.html

Source: MISC
Type: Vendor Advisory
https://www.samba.org/samba/security/CVE-2022-2031.html

Vulnerable Configuration:

Configuration 1:

cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.16.0 and < 4.16.4)

OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version >= 4.15.0 and < 4.15.9)

OR cpe:/a:samba:samba:*:*:*:*:*:*:*:* (Version < 4.14.14)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:org.opensuse.security:def:7544	P	ldb-tools-2.6.2-150500.1.1 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:51987	P	Security update for samba (Important)	2023-01-26
oval:org.opensuse.security:def:3662	P	Security update for ldb, samba (Important)	2022-08-03
oval:org.opensuse.security:def:95292	P	Security update for ldb, samba (Important)	2022-08-03
oval:org.opensuse.security:def:3787	P	Security update for ldb, samba (Important)	2022-08-03
oval:org.opensuse.security:def:95420	P	Security update for ldb, samba (Important)	2022-08-03
oval:org.opensuse.security:def:671	P	Security update for ldb, samba (Important)	2022-08-03
oval:org.opensuse.security:def:4301	P	Security update for samba (Important)	2022-07-29
oval:org.opensuse.security:def:43654	P	Security update for ldb, samba (Important)	2022-07-29
oval:org.opensuse.security:def:42423	P	Security update for ldb, samba (Important)	2022-07-29
oval:org.opensuse.security:def:5314	P	Security update for samba (Important)	2022-07-29
oval:org.opensuse.security:def:6122	P	Security update for samba (Important)	2022-07-29
oval:org.opensuse.security:def:42327	P	Security update for ldb, samba (Important)	2022-07-29

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