CVE-2021-20220
Medium
Description
A flaw was found in Undertow. A regression in the fix for CVE-2020-10687 was found. HTTP request smuggling related to CVE-2017-2666 is possible against HTTP/1.x and HTTP/2 due to permitting invalid characters in an HTTP request. This flaw allows an attacker to poison a web-cache, perform an XSS attack, or obtain sensitive information from request other than their own. The highest threat from this vulnerability is to data confidentiality and integrity.
SeverityMedium
CVSS4.8
Exploit probability—
Product
Redhat Undertow
PublishedFeb 23, 2021
First seenFeb 23, 2021
Weakness typeCWE-444CWE-444
How to fix
Update
- redhat undertow2.0.34, 2.1.6 or later
- io.undertow:undertow-core2.1.6, 2.0.34 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| redhat undertow | v < 2.0.34, 2.1.0 ≤ v < 2.1.6 | 2.0.34, 2.1.6 |
| netapp active_iq_unified_manager | No range specified | — |
| netapp oncommand_workflow_automation | No range specified | — |
| io.undertow:undertow-coreMaven | 2.1.0 ≤ v < 2.1.6, v < 2.0.34 | 2.1.6, 2.0.34 |
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