XNU
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Related Articles from SNS
One (Thread) Can Keep a (PRNG) Secret, but not Two
arXiv:2606.00918v2 Announce Type: replace Abstract: We present a novel, practical attack on the IPv6 Fragment ID generation algorithm of XNU, which is the kernel used by Apple products such as macOS and iOS. This attack exploits a race-condition vulnerability in the algorithm's pseudorandom number generator (PRNG) to cryptanalytically break, learn the internal state of the generator, and consequently predict fragment IDs, which, in turn, facilitates an IPv6 fragment spoofing attack. As far...