#VU99612 Processor optimization removal or modification of security-critical code in Botan - CVE-2024-50382

Vulnerability identifier: #VU99612

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-50382

CWE-ID: CWE-1037

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Botan
Universal components / Libraries / Libraries used by multiple products

Vendor: Randombit

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists in lib/utils/ghash/ghash.cpp in GHASH in AES-GCM when certain LLVM versions are used. A local user can execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Botan: 3.0.0, 3.1.0 - 3.1.1, 3.2.0, 3.3.0, 3.4.0, 3.5.0

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External links
https://github.com/randombit/botan/commit/53b0cfde580e86b03d0d27a488b6c134f662e957
https://github.com/randombit/botan/compare/3.5.0...3.6.0
https://arxiv.org/pdf/2410.13489
https://news.ycombinator.com/item?id=41887153

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.