CVE-1999-1109

Summary

CVE-1999-1109 is a denial-of-service vulnerability affecting Sendmail versions before 8.10.0. An attacker can exploit this issue by sending a sequence of ETRN (Extended Mail From Return) commands, followed by disconnecting from the server. Despite the connection being terminated, Sendmail continues to process these commands, leading to a denial-of-service condition. This vulnerability could potentially cause significant disruption to email services if not mitigated promptly.

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