Nextcloud Server up to 20.0.13/21.0.5/22.2.0 User Status API information disclosure

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 (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Nextcloud Server up to 20.0.13/21.0.5/22.2.0. This impacts an unknown function of the component User Status API. Such manipulation leads to information disclosure. This vulnerability is documented as CVE-2021-41239. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Nextcloud Server up to 20.0.13/21.0.5/22.2.0 (Cloud Software). Affected by this issue is an unknown part of the component User Status API. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality.

The weakness was released 03/09/2022 as GHSA-g722-cm3h-8wrx. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-41239 since 09/15/2021. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1592.

Upgrading to version 20.0.14, 21.0.6 or 22.2.1 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.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.3
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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: Server 20.0.14/21.0.6/22.2.1
Patch: github.com

Timelineinfo

09/15/2021 🔍
03/09/2022 +175 days 🔍
03/09/2022 +0 days 🔍
03/12/2022 +3 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-g722-cm3h-8wrx
Status: Confirmed

CVE: CVE-2021-41239 (🔍)
GCVE (CVE): GCVE-0-2021-41239
GCVE (VulDB): GCVE-100-194456

Entryinfo

Created: 03/09/2022 07:16
Updated: 03/12/2022 08:14
Changes: 03/09/2022 07:16 (52), 03/12/2022 08:14 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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