CVE-2018-16857
HIGHEPSS 82th pctlDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Exploit Intelligence
Elevated risk: more likely to be exploited than 82% of all known CVEs.
References
Related Vulnerabilities
Other CWE-358 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2018-1270 | Critical | 9.8 | 77% | - | Fix |
| CVE-2018-1275 | Critical | 9.8 | 58% | - | Fix |
| CVE-2024-7965 | High | 8.8 | 18% | KEV | Fix |
| CVE-2017-15663 | High | 7.5 | 13% | - | - |
| CVE-2016-10229 | Critical | 9.8 | 13% | - | Fix |
| CVE-2024-2174 | High | 8.8 | 13% | - | Fix |
Common questions
How do I fix CVE-2018-16857?
Upgrade samba on debian 11 to 2:4.9.2+dfsg-2 or later.
Is CVE-2018-16857 being actively exploited?
Not that we know of. CVE-2018-16857 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 2.3% is the estimated probability that it will be exploited in the next 30 days. That is higher than 82% of all scored CVEs.
How severe is CVE-2018-16857?
CVE-2018-16857 has a CVSS v3 base score of 7.4, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2018-16857 affect?
Published advisories record a fix for samba (Debian). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.