CVE-2024-37568

2024-06-0919:15:52

Debian Security Bug Tracker

security-tracker.debian.org

authlib

hmac verification

asymmetric public key

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:L/Au:N/C:N/I:P/A:N

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

6.8 Medium

AI Score

Confidence

Low

0.001 Low

EPSS

Percentile

45.6%

JSON

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.)

OSVersionArchitecturePackageVersionFilename
Debian12allpython-authlib<= 1.2.0-1python-authlib_1.2.0-1_all.deb
Debian11allpython-authlib<= 0.15.4-1python-authlib_0.15.4-1_all.deb
Debian999allpython-authlib< 1.3.1-1python-authlib_1.3.1-1_all.deb
Debian13allpython-authlib< 1.3.1-1python-authlib_1.3.1-1_all.deb

OS	Version	Architecture	Package	Version	Filename
Debian	12	all	python-authlib	<= 1.2.0-1	python-authlib_1.2.0-1_all.deb
Debian	11	all	python-authlib	<= 0.15.4-1	python-authlib_0.15.4-1_all.deb
Debian	999	all	python-authlib	< 1.3.1-1	python-authlib_1.3.1-1_all.deb
Debian	13	all	python-authlib	< 1.3.1-1	python-authlib_1.3.1-1_all.deb