CVE-2024-29370: python-jose — Exploit & Fix

Description

In python-jose 3.3.0 (specifically jwe.decrypt), a vulnerability allows an attacker to cause a Denial-of-Service (DoS) condition by crafting a malicious JSON Web Encryption (JWE) token with an exceptionally high compression ratio. When this token is processed by the server, it results in significant memory allocation and processing time during decompression.

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CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-409 CWE-409

Affected Products

Vendor	Product	Versions
python-jose_project	python-jose	All

References

Advisories & Patches

https://github.com/mpdavis/python-jose/issues/344

Exploits

https://github.com/mpdavis/python-jose/issues/344

Frequently Asked Questions

What is CVE-2024-29370? +

In python-jose 3.3.0 (specifically jwe.decrypt), a vulnerability allows an attacker to cause a Denial-of-Service (DoS) condition by crafting a malicious JSON Web Encryption (JWE) token with an exceptionally high compression ratio. When this token is processed by the server, it results in significant memory allocation and processing time during decompression. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2024-29370? +

CVE-2024-29370 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2024-29370? +

CVE-2024-29370 affects products from python-jose_project, specifically: python-jose. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-29370? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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