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CVE-2024-37568

Good to know:

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Date: June 8, 2024

lepture Authlib before 1.3.1 has algorithm confusion with asymmetric public keys. Unless an algorithm is specified in a jwt.decode call, HMAC verification is allowed with any asymmetric public key. (This is similar to CVE-2022-29217 and CVE-2024-33663.)

Language: Python

Severity Score

Related Resources (11)

https://github.com/pypa/advisory-database/tree/main/vulns/authlib/PYSEC-2024-52.yaml
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHJI32SN4FNAUVNALVGOKWHNSQ6XS3M5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZI7HYGN7VZAYFV6UV3SRLYF7QGERXIU/
https://github.com/lepture/authlib/issues/654
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHJI32SN4FNAUVNALVGOKWHNSQ6XS3M5/
https://security-tracker.debian.org/tracker/CVE-2024-37568
https://github.com/lepture/authlib
https://nvd.nist.gov/vuln/detail/CVE-2024-37568
https://www.vicarius.io/vsociety/posts/algorithm-confusion-in-lepture-authlib-cve-2024-37568
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IZI7HYGN7VZAYFV6UV3SRLYF7QGERXIU
https://www.mend.io/vulnerability-database/CVE-2024-37568

Severity Score

Weakness Type (CWE)

Improper Access Control

CWE-284

Improper Verification of Cryptographic Signature

CWE-347

Use of a Broken or Risky Cryptographic Algorithm

CWE-327

Top Fix

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Upgrade to version authlib - 1.3.1

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

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