Description
Apache James prior to release 3.6.3 and 3.7.1 is vulnerable to a buffering attack relying on the use of the STARTTLS command. Fix of CVE-2021-38542, which solved similar problem fron Apache James 3.6.1, is subject to a parser differential and do not take into account concurrent requests.
Remediation
References
http://www.openwall.com/lists/oss-security/2022/09/20/1
https://james.apache.org/james/update/2022/08/26/james-3.7.1.html