I'm still wondering if

a.  Removing system:anyuser from ACLs will prevent this privilege escalation
b. Removing system:anyuser from ACLs except "system:anyuser l" will prevent the privilege escalation (i.e. the only occurrence of system:anyuser is with l permission)

Any definitive conclusions?

Thanks!

Kim


Kim Kimball wrote:
Yes, but I thought this depended on a file in the cache that had been retrieved over an unauthenticated connection.

Lookup won't put a file in the cache.


Jeffrey Altman wrote:
Kim Kimball wrote:
If I abandon use of system:anyuser, except for lookup, does that get the
job done?

It seems to me that this forces all connections capable of fetching data
to be authenticated.  If I'm reading the alert correctly, this would
prevent FetchStatus exploit?

Kim

Lookup is performed via FetchStatus

Jeffrey Altman


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