CVE-2023-26482
CVE-2023-26482
9.0
CriticalPublished:
Last updated:
Source:security-advisories@github.com
Modified
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- Low
- User Interaction
- Required
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Description
Nextcloud server is an open source home cloud implementation. In affected versions a missing scope validation allowed users to create workflows which are designed to be only available for administrators. Some workflows are designed to be RCE by invoking defined scripts, in order to generate PDFs, invoking webhooks or running scripts on the server. Due to this combination depending on the available apps the issue can result in a RCE at the end. It is recommended that the Nextcloud Server is upgraded to 24.0.10 or 25.0.4. Users unable to upgrade should disable app `workflow_scripts` and `workflow_pdf_converter` as a mitigation.
References
security-advisories@github.com
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h3c9-cmh8-7qpjsecurity-advisories@github.com
https://github.com/nextcloud/server/commit/5a06b50b10cc9278bbe68bbf897a0c4aeb0c4e60af854a3a-2127-422b-91ae-364da2661108
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-h3c9-cmh8-7qpjaf854a3a-2127-422b-91ae-364da2661108
https://github.com/nextcloud/server/commit/5a06b50b10cc9278bbe68bbf897a0c4aeb0c4e60