This Metasploit module exploits an out-of-bounds read of an attacker-controlled string in OpenSMTPD's MTA implementation to execute a command as the root or nobody user, depending on the kind of grammar OpenSMTPD uses.
eaae80dd2ec7c12121e43d82f332898ca6bf36eb080cf1316770e1ef1e93f2f0Ubuntu Security Notice 4294-1 - It was discovered that OpenSMTPD mishandled certain input. A remote, unauthenticated attacker could use this vulnerability to execute arbitrary shell commands as any non-root user. It was discovered that OpenSMTPD did not properly handle hardlinks under certain conditions. An unprivileged local attacker could read the first line of any file on the filesystem.
5b6805dc7503709eaa6444271d78fe6c8eb7dcb5aa91a23ed44fee1b7b1d5835Debian Linux Security Advisory 4634-1 - Qualys discovered that the OpenSMTPD SMTP server performed insufficient validation of SMTP commands, which could result in local privilege escalation or the execution of arbitrary code.
5da50339d4d1fb31d2ce2fa5d1c69b447dfd44db51920c67a0c326da5a65d4c0Qualys discovered a vulnerability in OpenSMTPD, OpenBSD's mail server. This vulnerability, an out-of-bounds read introduced in December 2015, is exploitable remotely and leads to the execution of arbitrary shell commands.
2c58b82819510289b2fd55d1c6a82b81b279777abd6a6b0db391f990ec12b148
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