Import Source
https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64367.json
JSON Data
https://api.test.osv.dev/v1/vulns/AZL-64367
Upstream
Published
2025-06-25T17:15:40Z
Modified
2026-04-01T05:20:18.039346Z
Summary
CVE-2025-6442 affecting package rubygem-webrick for versions less than 1.7.0-2
Details

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.

References

Affected packages

Azure Linux:2 / rubygem-webrick

Package

Name
rubygem-webrick
Purl
pkg:rpm/azure-linux/rubygem-webrick

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.7.0-2

Database specific

source
"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-64367.json"