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.)

CVSS v3.1

5.9 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS

0.55% chance of exploitation in the next 30 days, 44th percentile

Published

2024-10-23

Updated

2024-10-24

Proof-of-concept exploits (1)

• https://arxiv.org/pdf/2410.13489

References

• CVE Record
• NVD entry

Related

• CVE-2024-50382
• CVE-2024-50395
• CVE-2024-50379
• CVE-2024-50404
• CVE-2024-50355
• CVE-2024-50427