PT-2023-29548 · Daurnimator+1 · Lua-Http+1

Artur Łącki + 1 · CVE-2023-4540 · Published 2023-09-05 · Updated 2024-10-10

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions lua-http versions before commit ddab283

Description The issue is related to an Improper Handling of Exceptional Conditions vulnerability in the Daurnimator lua-http library, which allows Excessive Allocation and a denial of service (DoS) attack to be executed by sending a properly crafted request to the server. Such a request causes the program to enter an infinite loop.

Recommendations For lua-http versions before commit ddab283, update to a version after commit ddab283 to resolve the issue. As a temporary workaround, consider restricting access to the lua-http library to minimize the risk of exploitation. Avoid using the library until the issue is resolved.

Exploit

Fix

DoS

Infinite Loop

Improper Handling of Exceptional Conditions

Weakness Enumeration

CWE-835

CWE-755

Related Identifiers

CVE-2023-4540

Affected Products

Debian

Lua-Http

References · 17

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/4xxx/CVE-2023-4540.json · Exploit
• https://github.com/daurnimator/lua-http/commit/ddab2835c583d45dec62680ca8d3cbde55e0bae6 · Patch
• https://ubuntu.com/security/CVE-2023-4540 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-4540 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2023-4540 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2023-4540 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2023-4540 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2023-4540 · Vendor Advisory
• https://cert.pl/posts/2023/09/CVE-2023-4540 · Patch
• https://osv.dev/vulnerability/CVE-2023-4540 · Vendor Advisory
• https://github.com/daurnimator/lua-http · Note
• https://twitter.com/VulmonFeeds/status/1699007968463683872 · Twitter Post
• https://t.me/cvenotify/97787 · Telegram Post
• https://https//cert.pl/en/posts/2023/09/CVE-2023-4540 · Note
• https://cert.pl/en/posts/2023/09/CVE-2023-4540 · Note