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Fencer Vulns
high 7.5

CVE-2022-32743 json

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

published 2022-09-01 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-35809

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 75%
public exploits
0
none known

Summary

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

Patch / fix

  • samba samba 4.17.0
  • samba Debian 14, Debian 13, Debian 12 2:4.17.2+dfsg-3

debian advisories DEBIAN-CVE-2022-32743

  • samba SLE Module for Python 2 15 SP3, SLE Module for Basesystem 15 SP3, SLE Micro 5.2 +4 more 4.15.8+git.527.8d0c05d313e-150300.3.40.2
  • samba SLE Module for Basesystem 15 SP4, SLE High Availability Extension 15 SP4, openSUSE Leap 15.4 4.15.8+git.527.8d0c05d313e-150400.3.14.1

suse advisories SUSE-SU-2022:3955-1SUSE-SU-2022:3244-1

  • samba Alpine 3.14 4.14.14-r0
  • samba Alpine 3.24, Alpine 3.23, Alpine 3.22 +4 more 4.17.0-r0

alpine advisories ALPINE-CVE-2022-32743

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-32743 updated cvss 7.5

samba: Validated dnsHostname write right needs to be implemented

  • Red Hat Enterprise Linux 7 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +18 more
    affected: no fix planned “Out of support scope”
  • Red Hat Storage 3 ctdb, samba, samba-dc, ctdb-tests, samba-libs, samba-pidl, +21 more
    under investigation
  • Red Hat Enterprise Linux 8 ctdb, samba, libnetapi, ctdb-tests, samba-libs, samba-pidl, +24 more Red Hat Enterprise Linux 9 ctdb, samba, libldb, ldb-tools, libnetapi, samba-libs, +27 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.57% chance of exploitation in the next 30 days, higher than 75% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • docs.microsoft.com https://docs.microsoft.com/en-us/openspecs/windows_protocols/ms-adts/5c578b15-d619-408d-ba17-380714b89fd1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

  • n/a samba

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.