CVE-2021-20220

Summary

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.

Affected Software

VendorProductVersion RangeStatus
n/aundertowUndertow 2.2.0.Final, Undertow 2.1.6.Final, Undertow 2.0.34.Finalaffected

Weaknesses

  • CWE-444: CWE-444

ADP Enrichment

CVE Program Container

Additional References

References