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In PostgreSQL 8.1, the dblink extension allows superusers to create functions that map to arbitrary C libraries using CREATE statements. This enables a remote authenticated superuser to execute functions from any shared library, such as invoking the system() function from libc.so.6, resulting in arbitrary command execution on the host system.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module (modules/exploits/linux/postgres/postgres_payload.rb) that exploits a vulnerability in PostgreSQL on Linux (CVE-2007-3280). The exploit targets systems where the postgres service account can write to /tmp and load user-defined function (UDF) shared libraries from there. The module compiles a custom Linux shared object (.so) file containing the attacker's payload (typically a Meterpreter reverse shell), uploads it to the target via PostgreSQL's binary injection, and creates a UDF to execute the payload. The exploit provides arbitrary code execution as the postgres user. The main attack vector is network-based, requiring access to the PostgreSQL service with valid credentials. The only fingerprintable endpoint is the /tmp directory on the target, where the malicious .so file is uploaded. The code is mature and weaponized, as it is part of the Metasploit framework and supports customizable payloads.
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