CVE-2024-50383

MEDIUM

Botan < 3.6.0 - Secret-Dependent Timing Discrepancy in donna128

Title source: llm
STIX 2.1

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.)

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