What is CVE-2024-39702?

CVE-2024-39702 is a medium-severity vulnerability in Openresty, classified under Inefficient Algorithmic Complexity. CVSS score: 5.9/10. Published 2024-07-23.

How severe is CVE-2024-39702?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Is CVE-2024-39702 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Openresty

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.

EPSS: 0.006 (43.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Openresty — versions 1.25.3.1
N/a — versions n/a

Weakness classification (CWE)

CWE-407 — Inefficient Algorithmic Complexity

Public proof-of-concept exploits

References

cve@mitre.org (Patch)

Frequently asked questions

What is CVE-2024-39702?: CVE-2024-39702 is a medium-severity vulnerability in Openresty, classified under Inefficient Algorithmic Complexity. CVSS score: 5.9/10. Published 2024-07-23.
How severe is CVE-2024-39702?: Medium severity. CVSS v3 base score is 5.9 out of 10.
Is CVE-2024-39702 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.