HTTP Request Smuggling in Red Hat Undertow

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU28497

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10719

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform HTTP request smuggling attack.

The vulnerability exists due to improper input validation. A remote attacker can send a specially crafted HTTP request and perform HTTP request smuggling attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Undertow: 1.0.0 - 2.1.0

External links

http://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-10719
http://github.com/undertow-io/undertow/commit/aa5e1fe11fec75032f14f0ae23e586f4cf3a3365

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.