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).

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.93% Top 10%
Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory samba.org
Affected: Red Hat samba
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-14907 third party advisory issue tracking
https://www.samba.org/samba/security/CVE-2019-14907.html vendor advisory
https://security.netapp.com/advisory/ntap-20200122-0001/ third party advisory
https://www.synology.com/security/advisory/Synology_SA_20_01 third party advisory
https://usn.ubuntu.com/4244-1/ third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00055.html third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GQ6U65I2K23YJC4FESW477WL55TU3PPT/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ACZVNMIFQGGXNJPMHAVBN3H2U65FXQY/ vendor advisory
https://security.gentoo.org/glsa/202003-52 third party advisory vendor advisory
https://lists.debian.org/debian-lts-announce/2021/05/msg00023.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2023/09/msg00013.html mailing list

Frequently Asked Questions

What is the severity of CVE-2019-14907?
CVE-2019-14907 has been scored as a medium severity vulnerability.
How to fix CVE-2019-14907?
To fix CVE-2019-14907, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-14907 being actively exploited in the wild?
It is possible that CVE-2019-14907 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-14907?
CVE-2019-14907 affects Red Hat samba.
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