CVE-2024-8763: lunary — Exploit & Fix

Description

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the lunary-ai/lunary repository, specifically in the compileTextTemplate function. The affected version is git be54057. An attacker can exploit this vulnerability by manipulating the regular expression /{{(.*?)}}/g, causing the server to hang indefinitely and become unresponsive to any requests. This is due to the regular expression's susceptibility to second-degree polynomial time complexity, which can be triggered by a large number of braces in the input.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-1333 CWE-1333

Affected Products

Vendor	Product	Versions
lunary	lunary	< 1.4.23

References

Advisories & Patches

https://github.com/lunary-ai/lunary/commit/7ff89b0304d191534b924cf063f3648206d497fa

Exploits

https://huntr.com/bounties/4fb63a6e-0056-4550-a34d-e161de1c13b8

Frequently Asked Questions

What is CVE-2024-8763? +

A Regular Expression Denial of Service (ReDoS) vulnerability exists in the lunary-ai/lunary repository, specifically in the compileTextTemplate function. The affected version is git be54057. An attacker can exploit this vulnerability by manipulating the regular expression /{{(.*?)}}/g, causing the server to hang indefinitely and become unresponsive to any requests. This is due to the regular expression's susceptibility to second-degree polynomial time complexity, which can be triggered by a large number of braces in the input. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-8763? +

CVE-2024-8763 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-8763? +

CVE-2024-8763 affects products from lunary, specifically: lunary. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8763? +

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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