CVE-2024-50383

Description

Botan before 3.6.0, when certain GCC versions are used, has a compiler-induced secret-dependent operation in lib/utils/donna128.h in donna128 (used in Chacha-Poly1305 and x25519). An addition can be skipped if a carry is not set. This was observed for GCC 11.3.0 with -O2 on MIPS, and GCC on x86-i386. (Only 32-bit processors can be affected.)

Reserved 2024-10-23 | Published 2024-10-23 | Updated 2024-10-24 | Assigner mitre

References

github.com/...ommit/53b0cfde580e86b03d0d27a488b6c134f662e957

github.com/randombit/botan/compare/3.5.0...3.6.0

arxiv.org/pdf/2410.13489

news.ycombinator.com/item?id=41887153

cve.org (CVE-2024-50383)

nvd.nist.gov (CVE-2024-50383)

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