Security expert Guido Vranken discovered a remote memory-corruption vulnerability in the recently released OpenSSL version 3.0.4. The library was released on June 21, 2022, and affects x64 systems with the AVX-512 instruction set.
“OpenSSL version 3.0.4, released on June 21th 2022, is susceptible to remote memory corruption which can be triggered trivially by an attacker. BoringSSL, LibreSSL and the OpenSSL 1.1.1 branch are not affected. Furthermore, only x64 systems with AVX512 support are affected. The bug is fixed in the repository but a new release is still pending.” reads the post published by Vranken.
The issue can be easily exploited by threat actors and it will be addressed with the next release.
Google researcher David Benjamin that has analyzed the vulnerability argues that the bug does not constitute a security risk. Benjamin also found an apparent bug in the paper by Shay Gueron upon which the RSAZ code is based.
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(SecurityAffairs – hacking, OpenSSL)
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