Vulnerability identifier: #VU71398

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-23491

CWE-ID: CWE-345

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
python-certifi
Other software / Other software solutions

Vendor: Certifi

Description

The vulnerability allows a remote attacker to bypass certificate validation checks.

The vulnerability exists due to presence of the TrustCor certificate in the Root Certificates list. the certificate is removed due to TrustCor's ownership also operated a business that produced spyware. Therefore, any checks that rely on digital signatures of trusted certificates were compromised.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

python-certifi: 2017.11.05 - 2022.09.24

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External links
http://groups.google.com/a/mozilla.org/g/dev-security-policy/c/oxX69KFvsm4/m/yLohoVqtCgAJ
http://github.com/certifi/python-certifi/security/advisories/GHSA-43fp-rhv2-5gv8

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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.