PT-2021-15623 · Apache · Apache Wicket

Jonathan Juursema · Published 2021-05-25 · Updated 2023-08-08 · CVE-2021-23937

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Apache Wicket versions 9.2.0 and prior Apache Wicket versions 8.11.0 and prior Apache Wicket versions 7.17.0 and prior Apache Wicket versions 6.2.0 and later

Description: A DNS proxy and possible amplification attack vulnerability in WebClientInfo of Apache Wicket allows an attacker to trigger arbitrary DNS lookups from the server when the X-Forwarded-For header is not properly sanitized. This DNS lookup can be engineered to overload an internal DNS server or to slow down request processing of the Apache Wicket application, causing a possible denial of service on either the internal infrastructure or the web application itself.

Recommendations: For Apache Wicket versions 9.2.0 and prior, update to a version later than 9.2.0 to resolve the issue. For Apache Wicket versions 8.11.0 and prior, update to a version later than 8.11.0 to resolve the issue. For Apache Wicket versions 7.17.0 and prior, update to a version later than 7.17.0 to resolve the issue. For Apache Wicket versions 6.2.0 and later, consider disabling the WebClientInfo component until a patch is available.

Fix

DoS

RCE

Information Disclosure

Weakness Enumeration

CWE-20

CWE-200

Related Identifiers

CVE-2021-23937

GHSA-HMHG-95WH-R699

Affected Products

Apache Wicket

References · 17

• https://lists.apache.org/thread.html/rc2ef22f90793e158cef65a7e370cdbca023c499d1403d65feeca870d%40%3Cusers.wicket.apache.org%3E · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-23937 · Security Note
• https://osv.dev/vulnerability/GHSA-hmhg-95wh-r699 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-23937 · Vendor Advisory
• https://github.com/apache/wicket · Note
• https://github.com/apache/wicket/commit/84f62a5cff462eaa3bfaf171b0638c7e7feea30d · Note
• https://lists.apache.org/thread.html/rc2ef22f90793e158cef65a7e370cdbca023c499d1403d65feeca870d@%3Cusers.wicket.apache.org%3E · Note
• https://lists.apache.org/thread.html/rce23bba1e11368f9f4cccce0e9b02b88dcdac4e4b2304e66bd098cf5@%3Cannounce.wicket.apache.org%3E · Note
• https://t.me/cvenotify/15076 · Telegram Post
• https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e@%3Cusers.wicket.apache.org%3E · Note
• https://lists.apache.org/thread.html/r8ccbd91b56ebf045d151bd4282bfeea7842a0698a0b76118fca8fe78%40%3Cdev.wicket.apache.org%3E · Note
• http://openwall.com/lists/oss-security/2021/05/25/2 · Note
• https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e%40%3Cusers.wicket.apache.org%3E · Note
• https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e@%3Cannounce.wicket.apache.org%3E · Note
• https://lists.apache.org/thread.html/r127c0c1f3cb71e5bc619ad1e4b898b97c49758d1f20a54042966473e%40%3Cannounce.wicket.apache.org%3E · Note