Improperly Implemented Security Check for Standard Affecting samba package, versions <2:4.9.2+dfsg-2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published2 Dec 2018
- disclosed28 Nov 2018
Introduced: 28 Nov 2018
CVE-2018-16857 (opens in a new tab)How to fix?
Upgrade Debian:unstable samba to version 2:4.9.2+dfsg-2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream samba package and not the samba package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
Samba from version 4.9.0 and before version 4.9.3 that have AD DC configurations watching for bad passwords (to restrict brute forcing of passwords) in a window of more than 3 minutes may not watch for bad passwords at all. The primary risk from this issue is with regards to domains that have been upgraded from Samba 4.8 and earlier. In these cases the manual testing done to confirm an organisation's password policies apply as expected may not have been re-done after the upgrade.
References
- https://security-tracker.debian.org/tracker/CVE-2018-16857
- https://www.samba.org/samba/security/CVE-2018-16857.html
- https://security.gentoo.org/glsa/202003-52
- https://security.netapp.com/advisory/ntap-20181127-0001/
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16857
- http://www.securityfocus.com/bid/106024