CVE-2024-50382

MEDIUM

Botan < 3.6.0 - Observable Discrepancy in GHASH via LLVM Compiler Optimization

Title source: llm
STIX 2.1

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.

References (4)

Core 4

Scores

CVSS v3 5.9
EPSS 0.0054
EPSS Percentile 41.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-203
Status published
Products (1)
botan_project/botan < 3.6.0
Published Oct 23, 2024
Tracked Since Feb 18, 2026