Nextcloud 25.0.0/25.0.1/25.0.2 Password Validation resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Nextcloud 25.0.0/25.0.1/25.0.2. Affected by this vulnerability is an unknown functionality of the component Password Validation Handler. The manipulation leads to resource consumption. This vulnerability is documented as CVE-2023-25816. The attack can be initiated remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nextcloud 25.0.0/25.0.1/25.0.2 (Cloud Software). This issue affects an unknown code of the component Password Validation Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

Nextcloud is an Open Source private cloud software. Versions 25.0.0 and above, prior to 25.0.3, are subject to Uncontrolled Resource Consumption. A user can configure a very long password, consuming more resources on password validation than desired. This issue is patched in 25.0.3 No workaround is available.

The weakness was released 02/25/2023 as GHSA-53q2-cm29-7j83. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-25816 since 02/15/2023. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 25.0.3 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.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.0
VulDB Meta Temp Score: 5.0

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

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Nextcloud 25.0.3
Patch: github.com

Timelineinfo

02/15/2023 🔍
02/25/2023 +10 days 🔍
02/25/2023 +0 days 🔍
03/25/2023 +28 days 🔍

Sourcesinfo

Advisory: GHSA-53q2-cm29-7j83
Status: Confirmed

CVE: CVE-2023-25816 (🔍)
GCVE (CVE): GCVE-0-2023-25816
GCVE (VulDB): GCVE-100-221771

Entryinfo

Created: 02/25/2023 08:37
Updated: 03/25/2023 08:01
Changes: 02/25/2023 08:37 (52), 03/25/2023 08:01 (11)
Complete: 🔍
Cache ID: 216::103

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