CVE-2025-6442: ruby-lang webrick

csirt@kutim:~/threat-intel/cve/CVE-2025-6442

CVSS 5.9 · Medium EPSS 0,50%

Kerentanan Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') pada ruby-lang webrick. Skor CVSS 3.1 5.9 (Medium) menurut NVD.

Deskripsi (NVD)

Ruby WEBrick read_header HTTP Request Smuggling Vulnerability. This vulnerability allows remote attackers to smuggle arbitrary HTTP requests on affected installations of Ruby WEBrick. This issue is exploitable when the product is deployed behind an HTTP proxy that fulfills specific conditions. The specific flaw exists within the read_headers method. The issue results from the inconsistent parsing of terminators of HTTP headers. An attacker can leverage this vulnerability to smuggle arbitrary HTTP requests. Was ZDI-CAN-21876.

Rincian

Terbit di NVD: 25 Juni 2025
Terakhir diubah: 17 Juni 2026
Status NVD: Analyzed
CVSS 3.1: 5.9 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator
Jenis kelemahan (CWE): CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
EPSS (30 hari): 0,50% peluang dieksploitasi; lebih tinggi dari 40,7% CVE lain

Produk dan versi terdampak

Vendor	Produk	Versi terdampak
ruby-lang	webrick	Semua versi sebelum 1.8.2

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551b... patch
https://www.zerodayinitiative.com/advisories/ZDI-25-414/ advisory pihak ketiga

Sumber: NVD · CVE.org · EPSS. Halaman ini disusun otomatis dari data tersebut; pembaruan terakhir 5 Okt 2026, 20:11 WITA. Kalau sistem di Perangkat Daerah memakai produk ini dan butuh bantuan, laporkan lewat kanal pelaporan.