Oracle Sun Java System Messaging Server contains a flaw related to the TLS implementation within the SMTP, IMAP and POP servers failing to properly clear transport layer buffers when changing from plaintext to ciphertext upon receipt of the 'STARTTLS' command. This may allow a remote attacker to inject arbitrary plaintext data which will be executed upon transition to ciphertext.
Currently, there are no known workarounds or upgrades to correct this issue. However, Oracle has released a patch to address this vulnerability. Check the vendor advisory or solution in the references section.
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