Denial of service in Undertow



Published: 2021-03-17
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-27782
CWE-ID CWE-400
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Undertow
Server applications / Web servers

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Resource exhaustion

EUVDB-ID: #VU51517

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-27782

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('Resource Exhaustion')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources within the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Undertow: 2.0.0 - 2.2.3


CPE2.3 External links

http://bugzilla.redhat.com/show_bug.cgi?id=1901304

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###