Nextcloud Server/Enterprise Server prior 24.0.12.5/25.0.9/26.0.4/27.0.1 access control

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in Nextcloud Server and Enterprise Server. This affects an unknown part. The manipulation results in access control. This vulnerability is reported as CVE-2023-39961. The attack can be launched remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in Nextcloud Server and Enterprise Server (Cloud Software). It has been classified as critical. Affected is an unknown functionality. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality. CVE summarizes:

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 24.0.4 and prior to versions 25.0.9, 26.0.4, and 27.0.1, when a folder with images or an image was shared without download permissions, the user could add the image inline into a text file and download it. Nextcloud Server versions 25.0.9, 26.0.4, and 27.0.1 and Nextcloud Enterprise Server versions 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1 contain a patch for this issue. No known workarounds are available.

The weakness was disclosed 08/10/2023 as GHSA-qhgm-w4gx-gvgp. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-39961 since 08/07/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Upgrading to version 24.0.12.5, 25.0.9, 26.0.4 or 27.0.1 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

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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: Access control
CWE: 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/Enterprise Server 24.0.12.5/25.0.9/26.0.4/27.0.1
Patch: github.com

Timelineinfo

08/07/2023 🔍
08/10/2023 +3 days 🔍
08/10/2023 +0 days 🔍
09/05/2023 +26 days 🔍

Sourcesinfo

Advisory: GHSA-qhgm-w4gx-gvgp
Status: Confirmed

CVE: CVE-2023-39961 (🔍)
GCVE (CVE): GCVE-0-2023-39961
GCVE (VulDB): GCVE-100-236832

Entryinfo

Created: 08/10/2023 20:57
Updated: 09/05/2023 11:38
Changes: 08/10/2023 20:57 (51), 09/05/2023 11:38 (11)
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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