Nextcloud Server/Enterprise Server API Endpoint improper removal of sensitive information before storage or transfer

CVSS Meta Temp Score
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CTI Interest Score
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3.7$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Nextcloud Server and Enterprise Server. Affected is an unknown function of the component API Endpoint. Executing a manipulation can lead to improper removal of sensitive information before storage or transfer. This vulnerability is handled as CVE-2023-28834. The attack can be executed remotely. There is not any exploit available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability has been found in Nextcloud Server and Enterprise Server (Cloud Software) (affected version unknown) and classified as problematic. This vulnerability affects an unknown functionality of the component API Endpoint. The manipulation with an unknown input leads to a improper removal of sensitive information before storage or transfer vulnerability. The CWE definition for the vulnerability is CWE-212. The product stores, transfers, or shares a resource that contains sensitive information, but it does not properly remove that information before the product makes the resource available to unauthorized actors. As an impact it is known to affect confidentiality. CVE summarizes:

Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. A user was able to get the full data directory path of the Nextcloud server from an API endpoint. By itself this information is not problematic as it can also be guessed for most common setups, but it could speed up other unknown attacks in the future if the information is known. Nextcloud Server 24.0.6 and 25.0.4 and Nextcloud Enterprise Server 23.0.11, 24.0.6, and 25.0.4 contain patches for this issue. There are no known workarounds.

The weakness was released 04/04/2023. The advisory is available at github.com. This vulnerability was named CVE-2023-28834 since 03/24/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.8
VulDB Meta Temp Score: 3.7

VulDB Base Score: 3.5
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔍

CNA Base Score: 3.5
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: Improper removal of sensitive information before storage or transfer
CWE: CWE-212 / CWE-200 / CWE-284
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/24/2023 🔍
04/04/2023 +10 days 🔍
04/04/2023 +0 days 🔍
04/21/2023 +17 days 🔍

Sourcesinfo

Product: github.com

Advisory: 33883
Status: Confirmed

CVE: CVE-2023-28834 (🔍)
GCVE (CVE): GCVE-0-2023-28834
GCVE (VulDB): GCVE-100-224806

Entryinfo

Created: 04/04/2023 08:53
Updated: 04/21/2023 17:11
Changes: 04/04/2023 08:53 (49), 04/21/2023 17:04 (1), 04/21/2023 17:11 (11)
Complete: 🔍
Cache ID: 216::103

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