vulnerability
Ubuntu: (Multiple Advisories) (CVE-2025-6442): WEBrick vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:N/I:C/A:N) | Jun 25, 2025 | Aug 4, 2025 | Oct 29, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:C/A:N)
Published
Jun 25, 2025
Added
Aug 4, 2025
Modified
Oct 29, 2025
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.
Solutions
ubuntu-pro-upgrade-libruby2-3ubuntu-pro-upgrade-libruby2-5ubuntu-pro-upgrade-libruby2-7ubuntu-pro-upgrade-ruby-webrickubuntu-pro-upgrade-ruby2-3ubuntu-pro-upgrade-ruby2-5
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