CVE-2019-3824
First published: Mon Feb 25 2019(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/ldb | 2:2.2.3-2~deb11u2 | |
| debian/samba | 2:4.13.13+dfsg-1~deb11u6 2:4.17.12+dfsg-0+deb12u1 2:4.21.2+dfsg-3 2:4.21.2+dfsg-4 | |
| Samba | <4.10.0 | |
| Ubuntu | =14.04 | |
| Ubuntu | =16.04 | |
| Ubuntu | =18.04 | |
| Ubuntu | =18.10 | |
| Debian | =8.0 | |
| SUSE Samba Client | <4.10.0 | |
| Ubuntu Linux | =14.04 | |
| Ubuntu Linux | =16.04 | |
| Ubuntu Linux | =18.04 | |
| Ubuntu Linux | =18.10 | |
| Samba Common | <4.10.0 |
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Reference Links
- 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
- https://launchpad.net/bugs/cve/CVE-2019-3824
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3824
- https://nvd.nist.gov/vuln/detail/CVE-2019-3824
- https://security-tracker.debian.org/tracker/CVE-2019-3824
- https://ubuntu.com/security/CVE-2019-3824
Frequently Asked Questions
What is the severity of CVE-2019-3824?
CVE-2019-3824 is a medium severity vulnerability that can cause denial of service for the LDAP server process in Samba.
How do I fix CVE-2019-3824?
To fix CVE-2019-3824, upgrade to the recommended Samba versions: 4.10.0 or higher.
Who is affected by CVE-2019-3824?
Authenticated users with read permissions on the LDAP server in Samba prior to version 4.10 are affected by CVE-2019-3824.
What kind of attack can exploit CVE-2019-3824?
CVE-2019-3824 can be exploited by sending specially crafted LDAP search expressions to cause a denial of service.
Which software versions are vulnerable to CVE-2019-3824?
Samba versions before 4.10.0 and specific Debian and Ubuntu releases with Samba pre-installed are vulnerable to CVE-2019-3824.
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