Bug 1198397 – VUL-1: CVE-2021-3670: samba,ldb: MaxQueryDuration not honoured in Samba AD DC LDAP

Bug 1198397 - (CVE-2021-3670) VUL-1: CVE-2021-3670: samba,ldb: MaxQueryDuration not honoured in Samba AD DC LDAP

(CVE-2021-3670)
Summary:	VUL-1: CVE-2021-3670: samba,ldb: MaxQueryDuration not honoured in Samba AD DC...

Status:	RESOLVED UPSTREAM

Classification:	Novell Products
Product:	SUSE Security Incidents
Classification:	Novell Products
Component:	Incidents
Version:	unspecified
Hardware:	Other Other

Priority:	P4 - Low Severity: Normal
Target Milestone:	---
Assigned To:	Samuel Cabrero
QA Contact:	Security Team bot

URL:	https://smash.suse.de/issue/328795/
Whiteboard:
Keywords:

Depends on:
Blocks:
	Show dependency tree / graph

Create test case

Clone This Bug

Reported:	2022-04-12 13:54 UTC by Carlos López
Modified:	2022-05-09 16:18 UTC (History)
CC List:	4 users (show)

See Also:
Found By:	---
Services Priority:
Business Priority:
Blocker:	---
Marketing QA Status:	---
IT Deployment:	---

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Carlos López 2022-04-12 13:54:49 UTC

Samba's AD DC does not seem to honour MaxQueryDuration

References:
https://github.com/samba-team/samba/commit/86fe9d48883f87c928bf31ccbd275db420386803
https://bugzilla.samba.org/show_bug.cgi?id=14694

Comment 1 Marcus Meissner 2022-04-21 07:03:18 UTC

does this affect both ldb and samba? 

a fix was in ldb, but it seems commits are also in samba?

Comment 2 Samuel Cabrero 2022-04-21 08:39:26 UTC

(In reply to Marcus Meissner from comment #1)
> does this affect both ldb and samba? 
> 
> a fix was in ldb, but it seems commits are also in samba?

Yes, it has two parts, ldb and samba and it only affects to the AD DC role.

Comment 4 Marcus Meissner 2022-04-21 08:55:23 UTC

As the Samba team is not considering this a security issue (see samba bug), SUSE is currently not backporting fixes to its samba and ldb versions.

Future version updates will include fixes for this denial of service attack.

Comment 5 Swamp Workflow Management 2022-05-09 16:18:05 UTC

SUSE-SU-2022:1576-1: An update that fixes one vulnerability is now available.

Category: security (low)
Bug References: 1198397
CVE References: CVE-2021-3670
JIRA References: 
Sources used:
openSUSE Leap 15.3 (src):    ldb-2.4.2-150300.3.15.1
SUSE Linux Enterprise Module for Basesystem 15-SP3 (src):    ldb-2.4.2-150300.3.15.1
SUSE Linux Enterprise Micro 5.2 (src):    ldb-2.4.2-150300.3.15.1
SUSE Linux Enterprise Micro 5.1 (src):    ldb-2.4.2-150300.3.15.1
SUSE Enterprise Storage 7.1 (src):    ldb-2.4.2-150300.3.15.1

NOTE: This line indicates an update has been released for the listed product(s). At times this might be only a partial fix. If you have questions please reach out to maintenance coordination.