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CVE

CVE-2023-25574

JupyterHub's LTI13Authenticator: JWT signature not validated
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CVE

CVE-2023-25574

JupyterHub's LTI13Authenticator: JWT signature not validated

jupyterhub-ltiauthenticator is a JupyterHub authenticator for learning tools interoperability (LTI). LTI13Authenticator that was introduced in jupyterhub-ltiauthenticator 1.3.0 wasn't validating JWT signatures. This is believed to allow the LTI13Authenticator to authorize a forged request. Only users that has configured a JupyterHub installation to use the authenticator class LTI13Authenticator are affected. jupyterhub-ltiauthenticator version 1.4.0 removes LTI13Authenticator to address the issue. No known workarounds are available.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25574.json, https://github.com/jupyterhub/ltiauthenticator/blob/3feec2e81b9d3b0ad6b58ab4226af640833039f3/ltiauthenticator/lti13/validator.py#L122-L164, https://github.com/jupyterhub/ltiauthenticator/blob/main/CHANGELOG.md#140---2023-03-01, https://github.com/jupyterhub/ltiauthenticator/security/advisories/GHSA-mcgx-2gcr-p3hp, https://nvd.nist.gov/vuln/detail/CVE-2023-25574

Severity

10

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
10
EPSS Probability
0.00234%
EPSS Percentile
0.45859%
Introduced Version
0
Fix Available

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