It has come to the attention of The Exim Maintainers that there is an exploit circulating in the wild which affects versions of Exim versions 4.69 and below. The flaw permits remote code execution over SMTP and, when combined with some clever abuse of Exim's configuration, escalation to root privileges from the Exim run-time user.
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crackpipe.c is a program that utilizes the linux Ethertap device to tunnel IP's over normal TCP/UDP connections. Being actively developed.
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