long sendmail timeouts let attacker prevent milter quiesce

Summary: An attacker that can predict when a milter will need to quiesce input to allow for a reload may hold open an SMTP session for several hours. This will lead to a DoS condition on the mailserver. Background: Sendmail is a popular Mail Transfer Agent MTA, used in many large sites that requi...

Avirt Mail 4.x DoS

Issue: ------ Avirt Mail 4.x up to latest version is vulnerable to denial of service while handling a SMTP session. Tested versions: ---------------- Avirt Mail 4.0 build 4124 - vulnerable Avirt Mail 4.2 build 4807 - vulnerable Both versions where tested on Windows 98 since I do not have access...