Description
Hermes WebUI contains an arbitrary file deletion vulnerability in the /api/session/delete endpoint that allows authenticated attackers to delete files outside the session directory by supplying an absolute path or path traversal payload in the session_id parameter. Attackers can exploit unvalidated session identifiers to construct paths that bypass the SESSION_DIR boundary and delete writable JSON files on the host system.
CVSS breakdown
CVSS 4.0
Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality (Vulnerable System)
None
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
None
Integrity
High
Availability
High
Affected products
- nesquena / hermes-webui0 – PR #409
References
- PATCHhttps://github.com/nesquena/hermes-webui/pull/409
- PATCHhttps://github.com/nesquena/hermes-webui/pull/412
- PATCHhttps://github.com/nesquena/hermes-webui/commit/3cc5839bf303fa6758bfdac538507407a2929655
- PATCHhttps://github.com/nesquena/hermes-webui/releases/tag/v0.50.132
- PATCHhttps://github.com/nesquena/hermes-webui/releases/tag/v0.50.32
- VENDOR_ADVISORYhttps://www.vulncheck.com/advisories/nesquena-hermes-webui-arbitrary-file-deletion-via-unvalidated-session-id