CVE-2021-40110

Name of the Vulnerable Software and Affected Versions Apache James versions prior to 3.6.1

Description A Denial Of Service issue was identified in Apache James, where an IMAP user can craft IMAP LIST commands to exploit a vulnerable regular expression, leading to a denial of service. This issue was discovered using the Jazzer fuzzer.

Recommendations For versions prior to 3.6.1, upgrade to Apache James 3.6.1 or higher, which enforces the use of the RE2J regular expression engine to execute regex in linear time without back-tracking.