CVE-2024-50383

Published: Oct 23, 2024Modified: Jun 17, 2026

5.9

Vector

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

Exploitability: 2.2 / Impact: 3.6

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.)

Affected (1)

Products: Botan Project: Botan

1 product

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Botan Project Botan	Before 3.6.0

Related CWEs

Observable Discrepancy

The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (4)

https://arxiv.org/pdf/2410.13489

Source: cve@mitre.org

ExploitTechnical DescriptionThird Party Advisory

https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957

Source: cve@mitre.org

Patch

https://github.com/randombit/botan/compare/3.5.0...3.6.0

Source: cve@mitre.org

Product

https://news.ycombinator.com/item?id=41887153

Source: cve@mitre.org

Issue Tracking

Timeline

No history available yet.