CVE-2020-25613
Public on 2020-10-06
Modified on 2021-05-24
Description
An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | ruby | 2021-05-20 | ALAS2-2021-1641 | Fixed |
| Amazon Linux 2 - Ruby2.6 Extra | ruby | 2023-08-21 | ALAS2RUBY2.6-2023-006 | Fixed |
| Amazon Linux 1 | ruby20 | 2021-01-12 | ALAS-2021-1468 | Fixed |
| Amazon Linux 1 | ruby24 | 2020-11-14 | ALAS-2020-1451 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| NVD | CVSSv2 | 5.0 | AV:N/AC:L/Au:N/C:N/I:P/A:N |
| NVD | CVSSv3 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |