Description
Twisted is an event-based framework for internet applications, supporting Python 3.6+. Prior to 22.2.0, Twisted SSH client and server implement is able to accept an infinite amount of data for the peer's SSH version identifier. This ends up with a buffer using all the available memory. The attach is a simple as `nc -rv localhost 22 < /dev/zero`. A patch is available in version 22.2.0. There are currently no known workarounds.
Remediation
References
Related Vulnerabilities
Drupal Core 4.6.x Denial of Service (4.6.0 - 4.6.10)
Zope Web Application Server Other Vulnerability (CVE-2006-4684)
phpMyAdmin Improper Input Validation Vulnerability (CVE-2011-1941)
SharePoint CVE-2020-1218 Vulnerability (CVE-2020-1218)
Atlassian Confluence Uncontrolled Search Path Element Vulnerability (CVE-2019-20406)