Withdrawn Advisory: http-cache-semantics max-stale handling can disclose cross-user cached responses

Withdrawn Advisory

This advisory has been withdrawn because it's not a valid vulnerability. This link is maintained to preserve external references.

Original Description

http-cache-semantics through 4.2.0 fails to properly validate security-zeroed cache entries when processing client max-stale directives, allowing unauthenticated attackers to retrieve cached responses belonging to other users. Attackers can request the same URL with a large max-stale value to obtain another user's Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.