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ASF GitHub Bot commented on PIRK-74: ------------------------------------ Github user ellisonanne commented on the issue: https://github.com/apache/incubator-pirk/pull/111 +1 > Information leakage through predictable failed hash keys > -------------------------------------------------------- > > Key: PIRK-74 > URL: https://issues.apache.org/jira/browse/PIRK-74 > Project: PIRK > Issue Type: Bug > Reporter: Jacob Wilder > Assignee: Jacob Wilder > Labels: security > > Given that “If we have hash collisions over our selector set, we will append > integers to the key starting with 0 until we no longer have collisions” if an > attacker sees that the hash key is one with integers on the end and the space > for selectors is well defined (or the attacker has a hunch about what the > actually-selected selector space looks like) they could feed either all or > subsets of their probable-selector pool into the keyed hash function given > keys with lower integers and look for collisions. The higher the key has been > incremented the more leaks possible (it’s unlikely the same two selectors > caused collisions with different hash keys). -- This message was sent by Atlassian JIRA (v6.3.4#6332)