Tandoor Recipes before 2.7.0 contains an improper cache-key design in cookbook/helper/permission_helper.py that allows authenticated users to retain stale group-based permissions across different spaces by exploiting a cache key keyed only on user id while omitting the active space, with the cached entry's TTL refreshed on every request. Attackers can create their own space to obtain an admin group designation, then switch their active space to a victim space where they hold lesser privileges, causing the stale cached admin decision to authorize elevated access and bypass group revocations or demotions across multiple permission classes and views.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products
tandoor recipes:tandoor recipes
References 4
https://github.com/TandoorRecipes/recipes/commit/1285f5009aa166c0d6f8658849eed5…
disclosure@vulncheck.com
https://github.com/TandoorRecipes/recipes/releases/tag/2.7.0
disclosure@vulncheck.com
https://github.com/TandoorRecipes/recipes/security/advisories/GHSA-69q3-5q6x-7h…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/tandoor-recipes-cross-space-permission-cac…
disclosure@vulncheck.com