VDB-207060 · CVE-2021-3670 · GCVE-0-2021-3670

Samba AD DC resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Samba. The impacted element is an unknown function of the component AD DC. The manipulation results in resource consumption. This vulnerability is known as CVE-2021-3670. It is possible to launch the attack remotely. No exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in Samba (File Transfer Software) (version unknown). It has been classified as problematic. Affected is an unknown function of the component AD DC. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability. CVE summarizes:

MaxQueryDuration not honoured in Samba AD DC LDAP

The weakness was published 08/24/2022. The advisory is shared for download at bugzilla.redhat.com. This vulnerability is traded as CVE-2021-3670 since 07/30/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.

Applying the patch 1d5b155619bc532c46932965b215bd73a920e56f is able to eliminate this problem. The bugfix is ready for download at gitlab.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

File Transfer Software

Name

Samba

License

open-source

Website

Product: https://www.samba.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 1d5b155619bc532c46932965b215bd73a920e56f

Timelineinfo

07/30/2021 🔍
08/24/2022 +390 days 🔍
08/24/2022 +0 days 🔍
09/25/2022 +32 days 🔍

Sourcesinfo

Product: samba.org

Advisory: 1d5b155619bc532c46932965b215bd73a920e56f
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-3670 (🔍)
GCVE (CVE): GCVE-0-2021-3670
GCVE (VulDB): GCVE-100-207060

Entryinfo

Created: 08/24/2022 09:11
Updated: 09/25/2022 09:11
Changes: 08/24/2022 09:11 (41), 09/25/2022 09:10 (1), 09/25/2022 09:11 (11)
Complete: 🔍
Cache ID: 216::103