What’s Vulnerable › Vulnerabilities

CVE-2024-50382

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2024-10-23 · updated 2026-06-17
• Weakness: CWE-203

Description

Botan before 3.6.0, when certain LLVM versions are used, has compiler-induced secret-dependent control flow in lib/utils/ghash/ghash.cpp in GHASH in AES-GCM. There is a branch instead of an XOR with carry. This was observed for Clang in LLVM 15 on RISC-V.

Affected products

• randombit botan: before 3.6.0 — fixed in 3.6.0

How to fix

Upgrade to a fixed version: randombit botan 3.6.0. Check the vendor advisory for mitigations.

References

• https://arxiv.org/pdf/2410.13489
• https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957
• https://github.com/randombit/botan/compare/3.5.0...3.6.0
• https://news.ycombinator.com/item?id=41887153

Get alerted when CVE-2024-50382 or the next vulnerability affects your stack