CVE-2024-39702: openresty — Fix

Description

In lj_str_hash.c in OpenResty 1.19.3.1 through 1.25.3.1, the string hashing function (used during string interning) allows HashDoS (Hash Denial of Service) attacks. An attacker could cause excessive resource usage during proxy operations via crafted requests, potentially leading to a denial of service with relatively few incoming requests. This vulnerability only exists in the OpenResty fork in the openresty/luajit2 GitHub repository. The LuaJIT/LuaJIT repository. is unaffected.

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CVSS v3.1 Score

5.9

MEDIUM

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

Weakness Type (CWE)

CWE-407 CWE-407

Affected Products

Vendor	Product	Versions
openresty	openresty	1.19.3.1 — 1.19.9.2
openresty	openresty	1.21.4.1 — 1.21.4.4
openresty	openresty	All

References

Advisories & Patches

https://openresty.org/en/ann-1025003002.html https://openresty.org/en/ann-1025003002.html

Frequently Asked Questions

What is CVE-2024-39702? +

In lj_str_hash.c in OpenResty 1.19.3.1 through 1.25.3.1, the string hashing function (used during string interning) allows HashDoS (Hash Denial of Service) attacks. An attacker could cause excessive resource usage during proxy operations via crafted requests, potentially leading to a denial of service with relatively few incoming requests. This vulnerability only exists in the OpenResty fork in the openresty/luajit2 GitHub repository. The LuaJIT/LuaJIT repository. is unaffected. It has a CVSS v3.1 base score of 5.9 (MEDIUM).

How severe is CVE-2024-39702? +

CVE-2024-39702 has a CVSS v3.1 score of 5.9 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-2024-39702? +

CVE-2024-39702 affects products from openresty, specifically: openresty. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-39702? +

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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CVE-2024-39702