#VU63168 Use of a broken or risky cryptographic algorithm in pyjwt - CVE-2022-29217

Vulnerability identifier: #VU63168

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-29217

CWE-ID: CWE-327

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pyjwt
Other software / Other software solutions

Vendor: jpadilla (José Padilla)

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to use of a broken or risky cryptographic algorithm. A remote attacker can cause key confusion through non-blocklisted public key formats.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

pyjwt: 1.5.0 - 2.3.0

---

External links
https://github.com/jpadilla/pyjwt/releases/tag/2.4.0
https://github.com/jpadilla/pyjwt/security/advisories/GHSA-ffqj-6fqr-9h24

---

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.