CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
74.6%
The Samba AD DC includes checks when adding service principals names (SPNs) to an account to ensure that SPNs do not alias with those already in the database. Some of these checks are able to be bypassed if an account modification re-adds an SPN that was previously present on that account, such as one added when a computer is joined to a domain. An attacker who has the ability to write to an account can exploit this to perform a denial-of-service attack by adding an SPN that matches an existing service. Additionally, an attacker who can intercept traffic can impersonate existing services, resulting in a loss of confidentiality and integrity.
Vendor | Product | Version | CPE |
---|---|---|---|
samba | samba | * | cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:* |
fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |
fedoraproject | fedora | 35 | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
[
{
"vendor": "n/a",
"product": "Samba",
"versions": [
{
"version": "Affects Samba v4.0.0 and later, Fixed in samba v4.13.17, v4.14.12, v4.15.4.",
"status": "affected"
}
]
}
]
access.redhat.com/security/cve/CVE-2022-0336
bugzilla.redhat.com/show_bug.cgi?id=2046134
bugzilla.samba.org/show_bug.cgi?id=14950
github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
security.gentoo.org/glsa/202309-06
www.samba.org/samba/security/CVE-2022-0336.html
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