CVE-2019-3824

Public on

Last Modified: UTC

Description

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

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

Statement

The versions of samba packages shipped with Red Hat Enterprise Linux 5, 6, and 7 do not support Active Directory Domain Controller mode, therefore are not affected by this flaw. This issue did not affect the version of samba as shipped with 'Red Hat Gluster Storage 3' as they did not include support for Active Directory Domain Controller.

The versions of samba packages shipped with Red Hat Enterprise Linux 5, 6, and 7 do not support Active Directory Domain Controller mode, therefore are not affected by this flaw. This issue did not affect the version of samba as shipped with 'Red Hat Gluster Storage 3' as they did not include support for Active Directory Domain Controller.

Additional information

  • Bugzilla 1671845: samba: Out of bound read in ldb_wildcard_compare in Samba AD DC
  • CWE-125: Out-of-bounds Read
  • FAQ: Frequently asked questions about CVE-2019-3824

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

6.5

6.5

Attack Vector

Network

Network

Attack Complexity

Low

Low

Privileges Required

Low

Low

User Interaction

None

None

Scope

Unchanged

Unchanged

Confidentiality Impact

None

None

Integrity Impact

None

None

Availability Impact

High

High

CVSS v3 Vector

Red Hat: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Acknowledgements

Red Hat would like to thank the Samba project for reporting this issue.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

My product is listed as "Under investigation" or "Affected", when will Red Hat release a fix for this vulnerability?

What can I do if my product is listed as "Will not fix"?

What can I do if my product is listed as "Fix deferred"?

What is a mitigation?

I have a Red Hat product but it is not in the above list, is it affected?

Why is my security scanner reporting my product as vulnerable to this vulnerability even though my product version is fixed or not affected?

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