Vulnerability Monitor

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CVE-2024-50383

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.)

Published

2024-10-23T17:15:19.540

Last Modified

2025-07-10T19:26:45.083

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

Weaknesses

Type: Secondary
CWE-203

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	botan_project	botan	< 3.6.0	Yes

References

https://arxiv.org/pdf/2410.13489 Exploit, Third Party Advisory, Technical Description ([email protected])
https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957 Patch ([email protected])
https://github.com/randombit/botan/compare/3.5.0...3.6.0 Product ([email protected])
https://news.ycombinator.com/item?id=41887153 Issue Tracking ([email protected])