CVE-2019-14907

Description

All samba versions 4.9.x before 4.9.18, 4.10.x before 4.10.12 and 4.11.x before 4.11.5 have an issue where if it is set with "log level = 3" (or above) then the string obtained from the client, after a failed character conversion, is printed. Such strings can be provided during the NTLMSSP authentication exchange. In the Samba AD DC in particular, this may cause a long-lived process(such as the RPC server) to terminate. (In the file server case, the most likely target, smbd, operates as process-per-client and so a crash there is harmless).

How to fix CVE-2019-14907

To remediate CVE-2019-14907, upgrade the affected package to a fixed version below.

• —upgrade to 4.10.12-r0 or later
• —upgrade to 2:4.11.5+dfsg-1 or later

Is CVE-2019-14907 being exploited?

Moderate — EPSS is 10.2%. Track this CVE but it's not at the top of the prioritisation list.

Affected packages (2)

• from 0, < 4.10.12-r0
• from 0, < 2:4.11.5+dfsg-1

CVSS scores

References (2)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2019-14907
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2019-14907