Frantisek Sumsal
efa16c7f31
So far we didn't limit the number of jumps when decompressing a DNS packet. This can lead to some extra work with specially crafted packets that send a staircase of thousands of descending compression pointers, which can then be amplified by referencing such staircase from thousands of names. Given that legitimate DNS packets need only a handful of jumps in the compression chains, let's limit the number of jumps per a single name to 256 (the same limit as, for example, Unbound currently has). Reported by opensec-intelligence (OpenSec).
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