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CVE-2024-34703

7.5 · HIGH

Botan is a C++ cryptography library.

Published Jun 30, 2024CWE-405EPSS 0.50%

Overview

CVE-2024-34703 is a high-severity vulnerability. It was published on June 30, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Botan is a C++ cryptography library. X.509 certificates can identify elliptic curves using either an object identifier or using explicit encoding of the parameters. Prior to versions 3.3.0 and 2.19.4, an attacker could present an ECDSA X.509 certificate using explicit encoding where the parameters are very large. The proof of concept used a 16Kbit prime for this purpose. When parsing, the parameter is checked to be prime, causing excessive computation. This was patched in 2.19.4 and 3.3.0 to allow the prime parameter of the elliptic curve to be at most 521 bits. No known workarounds are available. Note that support for explicit encoding of elliptic curve parameters is deprecated in Botan.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/randombit/botan/commit/08c404b23740babee1f6aa51b54e966029aadee4GitHubgithub.com/randombit/botan/commit/94e9154c143aa5264da6254a6a1be5bc66ee2b5aGitHubgithub.com/randombit/botan/security/advisories/GHSA-w4g2-7m2h-7xj7GitHubgithub.com/randombit/botan/commit/08c404b23740babee1f6aa51b54e966029aadee4GitHubgithub.com/randombit/botan/commit/94e9154c143aa5264da6254a6a1be5bc66ee2b5aGitHubgithub.com/randombit/botan/security/advisories/GHSA-w4g2-7m2h-7xj7

How CyberStrike helps

Frequently asked questions

What is CVE-2024-34703?

CVE-2024-34703 is a high-severity vulnerability. It was published on June 30, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-34703?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-34703?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-34703?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-34703 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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