PT-2024-7940 · Botan+3 · Botan+3

Published 2024-10-21 · Updated 2026-03-29 · CVE-2024-50383

Positive Technologies (AI Summary)

CVSS v3.1

5.9

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Botan versions prior to 3.6.0

Description The issue is related to a compiler-induced secret-dependent operation in the lib/utils/donna128.h component of the Botan cryptographic library. This can lead to information disclosure through side-channel attacks. The vulnerability can be exploited by a remote attacker to gain access to confidential data. It is observed to affect 32-bit processors.

Recommendations For versions prior to 3.6.0, update to version 3.6.0 or later to resolve the issue. As a temporary workaround, consider disabling the use of the donna128 component in Chacha-Poly1305 and x25519 until a patch is available. Restrict access to sensitive data to minimize the risk of exploitation.

Exploit

Fix

Side Channel Attack

Weakness Enumeration

CWE-203

Related Identifiers

AZL-51681

AZL-51701

BDU:2024-09444

CVE-2024-50383

MGASA-2025-0295

OPENSUSE-SU-2024:0343-1

USN-7586-1

Affected Products

Botan

Debian

Linuxmint

Ubuntu

References · 37

• 🔥 https://arxiv.org/pdf/2410.13489 · Exploit
• https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-50383 · Security Note
• https://ubuntu.com/security/notices/USN-7586-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2026-0224SE18 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7586-1 · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2025-0295 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-50383 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2024-50383 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-34703 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-39312 · Vendor Advisory
• https://osv.dev/vulnerability/AZL-51701 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-34702 · Vendor Advisory
• https://ubuntu.com/security/CVE-2024-50382 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2024-1031SE47 · Vendor Advisory