#VU53532 Input validation error in Apache Wicket - CVE-2021-23937

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Main Vulnerability Database Vulnerabilities #VU53532

#VU53532 Input validation error in Apache Wicket - CVE-2021-23937

Published: May 25, 2021


Vulnerability identifier: #VU53532
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-23937
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Apache Wicket
Software vendor:
Apache Foundation

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in WebClientInfo when processing the "X-Forwarded-For" HTTP header. A remote attacker can force the server to initiate numerous DNS lookups and overload the internal DNS server.


Remediation

Install updates from vendor's website.

External links