Description
Seahub before 13.0.23 does not enforce SHARE_LINK_LOGIN_REQUIRED on GET /api/v2.1/share-link-zip-task/, allowing unauthenticated users to bypass authentication. Attackers with a folder share-link token can call the GET endpoint to obtain a fileserver zip token and download entire shared directory trees.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality (Vulnerable System)
High
Integrity (Vulnerable System)
High
Availability (Vulnerable System)
High
Confidentiality (Subsequent System)
None
Integrity (Subsequent System)
None
Availability (Subsequent System)
None
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- haiwen / seahub0 – 13.0.23
References
- MISChttps://plus.seafile.com/wiki/publish/seafile-wiki/v5D5/
- MISChttps://github.com/haiwen/seahub/issues/9050
- PATCHhttps://github.com/haiwen/seahub/commit/b609949cf64ed6a15708d0fb5ea9c179962e23cc
- PATCHhttps://github.com/haiwen/seahub/commit/162cddae0831188d02bb8d451dc2193e197dcc57
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/seahub-authentication-bypass-in-sharelinkziptaskview-get-method