CVE-2025-6442Medium
AST
AST
Astra Linux Security Bulletins
Astra publishes per-release bulletins that map upstream CVEs to their own package repositories, with remediation timelines tied to the certification level (SE 1.7, CE 2.12, etc.). Indispensable for systems that require ФСТЭК/ФСБ clearance.
Region
RU
Updates
24 ч
License
Открытые данные
Vendor security bulletins for Astra Linux Special Edition and Common Edition — the primary certified Linux OS for Russian defense and critical infrastructure.
https://wiki.astralinux.ru/pages/viewpage.action?pageId=27362056 →Share link
Anyone with the link can open this vulnerability.
Ruby WEBrick read_header HTTP Request Smuggling Vulnerability. This vulnerability allows remote attackers to smuggle arbitrary HTTP request…
CVSS
5.9
Medium
EPSS
0.00
p33
Published
2025-01-01
Updated
2025-01-01
Description
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.
Tags · CWE
Pre-auth
CWE-444
CWE-444BaseIncomplete
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.
https://cwe.mitre.org/data/definitions/444.html →Open in CWE collection →CAPEC-33
CAPEC-33DetailedStable
HTTP Request Smuggling
https://capec.mitre.org/data/definitions/33.html →Open in CAPEC collection →
CAPEC-273
CAPEC-273DetailedStable
HTTP Response Smuggling
https://capec.mitre.org/data/definitions/273.html →Open in CAPEC collection →
Affected products
Webrick < 1.8.2
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
Timeline
2025-01-01
Published
2025-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: H
High (H)
Privileges Required
PR: N
None (N)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: N
None (N)
Integrity Impact
I: H
High (H)
Availability Impact
A: N
None (N)
Exploit indicators
EPSS
0.004 · p33
Known exploited (KEV)
No
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected products
| Product | Vendor | Status |
|---|---|---|
| jruby | Tracked | |
| jruby | Tracked | |
| jruby | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| ruby-webrick | Tracked | |
| webrick | * | Tracked |
Source databases
AST
AST
Astra Linux Security Bulletins
Astra publishes per-release bulletins that map upstream CVEs to their own package repositories, with remediation timelines tied to the certification level (SE 1.7, CE 2.12, etc.). Indispensable for systems that require ФСТЭК/ФСБ clearance.
Region
RU
Updates
24 ч
License
Открытые данные
Vendor security bulletins for Astra Linux Special Edition and Common Edition — the primary certified Linux OS for Russian defense and critical infrastructure.
https://wiki.astralinux.ru/pages/viewpage.action?pageId=27362056 →DEB
DEB
Debian Security Advisories (DSA)
DSAs are published by the Debian Security Team for issues affecting the stable distribution. The downstream tracker (security-tracker.debian.org) additionally maps every CVE to its package-level status across all supported suites.
Region
Intl.
Updates
1 ч
License
Public Domain
Advisories covering the Debian stable and oldstable releases. Ship notes include the exact .deb version that remediates each issue.
https://www.debian.org/security/ →CVE
CVE
National Vulnerability Database
NVD is the U.S. government repository of standards-based vulnerability management data, built on top of the MITRE CVE list. Every record includes CPE applicability statements, CVSS v2 and v3.x base scores, CWE mappings and cross-references to advisories.
Region
US
Updates
15 min
License
Public Domain
Comprehensive catalog of publicly disclosed vulnerabilities with CPE matches, CVSS scoring and reference URLs. De-facto standard for cross-vendor correlation.
https://nvd.nist.gov →UBU
UBU
Ubuntu Security Notices (USN)
USNs are authoritative for Ubuntu systems. The CVE Tracker links each vulnerability to its per-release status (needed, released, not-affected) and to the exact Launchpad bug where the fix is integrated.
Region
Intl.
Updates
1 ч
License
CC BY-SA 3.0
Security notices for Ubuntu LTS and interim releases, covering main, universe and (via Pro) ESM-extended packages.
https://ubuntu.com/security/notices →Related vulnerabilities
External references
https://github.com/ruby/webrick/commit/ee60354bcb84ec33b9245e1d1aa6e1f7e8132101#diff-ad02984d873efb089aa51551bc6b7d307a53e0ba1ac439e91d69c2e58a478864@https://www.zerodayinitiative.com/advisories/ZDI-25-414/https://www.cve.org/CVERecord?id=CVE-2025-6442@https://www.zerodayinitiative.com/advisories/ZDI-25-414/@https://ubuntu.com/security/notices/USN-7709-1@https://ubuntu.com/security/notices/USN-7840-1