A vulnerability has been reported in spamdyke, which can be exploited by malicious people to manipulate certain data.
The vulnerability is caused due to the TLS implementation not properly clearing transport layer buffers when upgrading from plaintext to ciphertext after receiving the "STARTTLS" command. This can be exploited to insert arbitrary plaintext data (e.g. SMTP commands) during the plaintext phase, which will then be executed after upgrading to the TLS ciphertext phase.
The vulnerability is reported in versions prior to 4.2.1.
Solution: Update to version 4.2.1.
Provided and/or discovered by: The vendor credits Eric Shubert.
Original Advisory: http://www.spamdyke.org/documentation/Changelog.txt
Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this
information to email@example.com