CVE-2023-32749
Published: 08 June 2023
Summary
CVE-2023-32749 is a high-severity Incorrect Authorization (CWE-863) vulnerability in Pydio Cells. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 1.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
Pydio Cells contains an authorization flaw tracked as CVE-2023-32749 and CWE-863. By default the application permits creation of external users for file sharing, yet the HTTP request that performs this action accepts arbitrary role assignments without server-side validation. An authenticated user who supplies every available role to a newly created external account thereby obtains access to all cells and non-personal workspaces. The issue carries a CVSS 3.1 score of 8.8.
An attacker who already possesses a low-privileged account can exploit the weakness simply by intercepting and editing the external-user creation request. Successful exploitation grants the attacker the combined permissions of every role, effectively bypassing intended access controls and exposing data across the instance.
Public advisories published by RedTeam Pentesting and mirrored on Packet Storm and Full Disclosure detail the request manipulation technique and list the affected Pydio Cells version 4.1.2; the same sources provide the only available remediation guidance. The associated EPSS score has remained at 0.5561 from disclosure onward, indicating no material increase in observed exploitation interest.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-36974
Vulnerability details
Pydio Cells allows users by default to create so-called external users in order to share files with them. By modifying the HTTP request sent when creating such an external user, it is possible to assign the new user arbitrary roles.…
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By assigning all roles to a newly created user, access to all cells and non-personal workspaces is granted.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Periodic review and update of procedures reduces incorrect authorization implementations over time.
Supervision identifies cases where authorization logic incorrectly permits unauthorized actions.
Defining permitted attribute values and auditing modifications reduces the chance of incorrect authorization outcomes due to tampered or missing labels.
The authorization process and usage restrictions help prevent incorrect authorization for remote access types.
Establishing configuration and connection requirements helps ensure correct rather than incorrect authorization for wireless access.
Establishing connection authorization processes for mobile devices helps ensure authorization decisions are correctly implemented rather than incorrect.
Monitoring account use, notifying on changes, and reviewing accounts for compliance corrects incorrect authorization assignments.
Ensures authorization decisions for external system use are correctly implemented and enforced.