CVE-2022-32743 — Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName at

Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName attribute which could permit unprivileged users to write it.

01What is this vulnerability?

Samba does not validate the Validated-DNS-Host-Name right for the dNSHostName attribute which could permit unprivileged users to write it.

02Affected products

Vendor	Product	Versions
n	a / samba	samba 4.1 and newer

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-01T00:00:00.000Z
• Last modified: 2024-08-03T07:46:44.980Z

09References

• bugzilla.samba.org — https://bugzilla.samba.org/show_bug.cgi?id=14833
• docs.microsoft.com — https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/5c578b15-d6…
• lists.fedoraproject.org — https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro…
• security.gentoo.org — https://security.gentoo.org/glsa/202309-06