CVE-2022-0336
What it is
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.
At a glance
- Exploitability
- Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.
- Exploit odds
- 1.8% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 1.8% in the next 30 days (EPSS).
- Severity: 8.8 HIGH (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 1.8% · EPSS, next 30 days
- Weakness
- CWE-276 · Incorrect default permissions
- Record status
- Modified
Affected
- Samba < 4.13.17
- Samba < 4.14.12
- Samba < 4.15.4
- Fedoraproject Fedora 34
- Fedoraproject Fedora 35
Attack profile CVSS 3.1 · 8.8
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Raw vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2022-0336.md and follow it. Check whether this project is affected by CVE-2022-0336. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://bugzilla.samba.org/show_bug.cgi?id=14950
- https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
- https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
- https://www.samba.org/samba/security/CVE-2022-0336.html
- https://bugzilla.samba.org/show_bug.cgi?id=14950
- https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
- https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
- https://www.samba.org/samba/security/CVE-2022-0336.html
References
- https://access.redhat.com/security/cve/CVE-2022-0336
- https://bugzilla.redhat.com/show_bug.cgi?id=2046134
- https://bugzilla.samba.org/show_bug.cgi?id=14950
- https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
- https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
- https://security.gentoo.org/glsa/202309-06
- https://www.samba.org/samba/security/CVE-2022-0336.html
- https://access.redhat.com/security/cve/CVE-2022-0336
- https://bugzilla.redhat.com/show_bug.cgi?id=2046134
- https://bugzilla.samba.org/show_bug.cgi?id=14950
- https://github.com/samba-team/samba/commit/1a5dc817c0c9379bbaab14c676681b42b0039a3c
- https://github.com/samba-team/samba/commit/c58ede44f382bd0125f761f0479c8d48156be400
- https://security.gentoo.org/glsa/202309-06
- https://www.samba.org/samba/security/CVE-2022-0336.html