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CVE-2024-50383

Date: October 22, 2024

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.)

Language: C++

Severity Score

Related Resources (7)

https://news.ycombinator.com/item?id=41887153
https://arxiv.org/pdf/2410.13489
https://github.com/randombit/botan/compare/3.5.0...3.6.0
https://security-tracker.debian.org/tracker/CVE-2024-50383
https://nvd.nist.gov/vuln/detail/CVE-2024-50383
https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957
https://www.mend.io/vulnerability-database/CVE-2024-50383

Severity Score

Weakness Type (CWE)

Observable Discrepancy

CWE-203

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

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