PT-2020-5675 · Ruby+9 · Webrick+10
Piao
·
Published
2020-10-01
·
Updated
2025-09-29
·
CVE-2020-25613
CVSS v3.1
7.5
High
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
Name of the Vulnerable Software and Affected Versions
Ruby versions prior to 2.5.9
Ruby versions 2.6.x through 2.6.6
Ruby versions 2.7.x through 2.7.1
Description
The issue is related to the WEBrick library in Ruby, which has a problem with incorrect checking of the header value. This can potentially allow a remote attacker to impact data integrity by bypassing a reverse proxy with poor header checks, leading to an HTTP Request Smuggling attack.
Recommendations
For Ruby versions prior to 2.5.9, update to version 2.5.9 or later to resolve the issue.
For Ruby versions 2.6.x through 2.6.6, update to version 2.6.7 or later to resolve the issue.
For Ruby versions 2.7.x through 2.7.1, update to version 2.7.2 or later to resolve the issue.
As a temporary workaround, consider restricting access to the WEBrick server to minimize the risk of exploitation.
Exploit
Fix
HTTP Request/Response Smuggling
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Linuxmint
Red Hat
Rocky Linux
Ruby
Suse
Ubuntu
Webrick