CVE-2019-12436

Description

Samba 4.10.x before 4.10.5 has a NULL pointer dereference, leading to an AD DC LDAP server Denial of Service. This is related to an attacker using the paged search control. The attacker must have directory read access in order to attempt an exploit.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 4.59% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory samba.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.samba.org/samba/security/CVE-2019-12436.html vendor advisory
https://usn.ubuntu.com/4018-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/108823 vdb entry
https://www.synology.com/security/advisory/Synology_SA_19_27
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ3LCJNJ3ONHIRKDSKOTT6QGXALLCHVG/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-12436?
CVE-2019-12436 has been scored as a medium severity vulnerability.
How to fix CVE-2019-12436?
To fix CVE-2019-12436, 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-2019-12436 being actively exploited in the wild?
It is possible that CVE-2019-12436 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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