Nextcloud Server up to 23.0.10/24.0.6 Password Length resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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2.6$0-$5k0.00

A vulnerability has been found in Nextcloud Server up to 23.0.10/24.0.6 (Cloud Software) and classified as problematic. Affected by this vulnerability is an unknown code of the component Password Length Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. The summary by CVE is:

Nextcloud Server is an open source personal cloud server. Prior to versions 23.0.11, 24.0.7, and 25.0.0, there is no password length limit when creating a user as an administrator. An administrator can cause a limited DoS attack against their own server. Versions 23.0.11, 24.0.7, and 25.0.0 contain a fix for the issue. As a workaround, don't create user accounts with long passwords.

The weakness was published 12/02/2022 as GHSA-4gm7-j7wg-m4fx. The advisory is shared at github.com. This vulnerability is known as CVE-2022-41969 since 09/30/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 23.0.11, 24.0.7 or 25.0.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 2.6
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.7
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 2.7
NVD Vector: 🔍

CNA Base Score: 2.4
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

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

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Server 23.0.11/24.0.7/25.0.0
Patch: github.com

Timelineinfo

09/30/2022 🔍
12/02/2022 +63 days 🔍
12/02/2022 +0 days 🔍
12/25/2022 +23 days 🔍

Sourcesinfo

Advisory: GHSA-4gm7-j7wg-m4fx
Status: Confirmed

CVE: CVE-2022-41969 (🔍)
GCVE: GCVE-0-2022-41969

Entryinfo

Created: 12/02/2022 11:16 AM
Updated: 12/25/2022 09:10 AM
Changes: 12/02/2022 11:16 AM (43), 12/25/2022 09:10 AM (20)
Complete: 🔍
Cache ID: 18:FE9:40

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