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canopic jug writes:

Return-oriented programming (ROP) is now a common technique for compromising systems via a stack-smashing vulnerability. Although restrictions on executing code on the stack have mostly put an end to many simple stack-smashing attacks, that does not mean that they are no longer a threat. There are various schemes in use for defeating ROP attacks. A new mechanism called "RETGUARD" is being implemented in OpenBSD and is notable for its relative simplicity. It makes use of a simple return-address transformation to disrupt ROP chains to hinder their execution and takes the form of a patch to the LLVM compiler adding a new flag.

Original Submission

1. "canopic jug" - https://soylentnews.org/~canopic+jug/
2. ""RETGUARD" is being implemented in OpenBSD" - https://lwn.net/Articles/732201/
3. "Original Submission" - https://soylentnews.org/submit.pl?op=viewsub&subid=22244

printed from SoylentNews, RETGUARD: A Return-Oriented Programming Defense From OpenBSD on 2024-04-23 21:45:34