Denial of service in Botan

1) Resource exhaustion

EUVDB-ID: #VU96994

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-34703

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources when parsing X.509 certificates. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Botan: 2.0.0 - 3.2.0

CPE2.3

• cpe:2.3:a:randombit:botan:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.19.3:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.3.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.4.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.5.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.7.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.8.0:*:*:*:*:*:*:*
• cpe:2.3:a:randombit:botan:2.9.0:*:*:*:*:*:*:*

External links

https://github.com/randombit/botan/security/advisories/GHSA-w4g2-7m2h-7xj7
https://github.com/randombit/botan/commit/08c404b23740babee1f6aa51b54e966029aadee4
https://github.com/randombit/botan/commit/94e9154c143aa5264da6254a6a1be5bc66ee2b5a

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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