PT-2024-6618 · Nginx+8 · Nginx+8

Nateberkopec · Published 2024-09-19 · Updated 2026-03-13 · CVE-2024-45614

Positive Technologies (AI Summary)

CVSS v4.0

6.3

Medium

Base vector

AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N

Name of the Vulnerable Software and Affected Versions: Puma versions prior to 6.4.3 Puma versions prior to 5.6.9

Description: The issue is related to the handling of HTTP requests in Puma, a Ruby/Rack web server. Clients could overwrite values set by intermediate proxies, such as X-Forwarded-For, by providing an underscore version of the same header, for example, X-Forwarded For. This could allow an attacker to downgrade connections to HTTP or redirect responses, potentially causing confidentiality leaks. Users relying on proxy-set variables are affected.

Recommendations: For Puma versions prior to 6.4.3, upgrade to version 6.4.3 or later. For Puma versions prior to 5.6.9, upgrade to version 5.6.9 or later. As a temporary workaround, consider using Nginx's underscores in headers configuration variable to discard headers with underscores at the proxy level. Any users implicitly trusting proxy-defined headers for security should immediately cease doing so until upgraded to the fixed versions.

Exploit

Fix

IDOR

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-639

CWE-444

Related Identifiers

ALT-PU-2025-9550

BDU:2024-07777

CVE-2024-45614

DLA-3947-1

GHSA-9HF4-67FC-4VF4

OESA-2024-2249

OESA-2024-2250

OESA-2024-2251

OESA-2024-2252

OESA-2024-2259

OPENSUSE-SU-2024:14474-1

OPENSUSE-SU-2024_3644-1

OPENSUSE-SU-2025:15123-1

OPENSUSE-SU-2026:10357-1

SUSE-SU-2024:3644-1

SUSE-SU-2025:03466-1

SUSE-SU-2025:03467-1

USN-7031-1

USN-7031-2

Affected Products

Alt Linux

Astra Linux

Debian

Linuxmint

Nginx

Puma

Red Os

Suse

Ubuntu

References · 67

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/45xxx/CVE-2024-45614.json · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/puma/CVE-2024-45614.yml · Exploit
• https://github.com/puma/puma/security/advisories/GHSA-9hf4-67fc-4vf4 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:15123-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2024-45614 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2024-45614 · Vendor Advisory
• https://osv.dev/vulnerability/USN-7031-2 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2024:3644-1 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3947-1 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se38-bulletin-2026-0126SE38 · Vendor Advisory
• https://wiki.astralinux.ru/astra-linux-se18-bulletin-2025-0811SE18 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-7031-2 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2024-45614 · Security Note
• https://osv.dev/vulnerability/GHSA-9hf4-67fc-4vf4 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2025:03467-1 · Vendor Advisory