CVE-2019-3824

Severity: medium (CVSS 6.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-03-06 · updated 2026-06-17
Weakness: CWE-125

Description

A flaw was found in the way an LDAP search expression could crash the shared LDAP server process of a samba AD DC in samba before version 4.10. An authenticated user, having read permissions on the LDAP server, could use this flaw to cause denial of service.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
Debian Linux: 8.0
Samba: before 4.10.0 — fixed in 4.10.0

How to fix

Upgrade to a fixed version: Samba 4.10.0. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00035.html
http://www.securityfocus.com/bid/107347
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3824
https://bugzilla.samba.org/show_bug.cgi?id=13773
https://lists.debian.org/debian-lts-announce/2019/03/msg00000.html
https://security.netapp.com/advisory/ntap-20190226-0001/
https://usn.ubuntu.com/3895-1/
https://www.debian.org/security/2019/dsa-4397
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00035.html
http://www.securityfocus.com/bid/107347
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3824
https://bugzilla.samba.org/show_bug.cgi?id=13773

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