Vulnerability identifier: #VU79490

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-38325

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cryptography
Universal components / Libraries / Programming Languages & Components

Vendor: Сryptography

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exists due to improper certificate validation when handling SSH certificates that have critical options. A remote attacker can perform MitM attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cryptography: 40.0.0 - 41.0.1

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External links
http://github.com/pyca/cryptography/compare/41.0.1...41.0.2
http://github.com/pyca/cryptography/issues/9207
http://github.com/pyca/cryptography/pull/9208

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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.