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CVE-2015-8562 is a critical remote code execution vulnerability in Joomla! CMS versions 1.5.x, 2.x, and 3.x before 3.4.6. The flaw arises from improper filtering of browser information (such as the HTTP User-Agent header) when saving session values to the database. Attackers can exploit this by injecting arbitrary serialized PHP objects into session data, leveraging MySQL's utf8_general_ci collation to truncate data and facilitate payload injection. This enables PHP Object Injection, leading to arbitrary PHP code execution on the server. The vulnerability was actively exploited in the wild prior to public disclosure.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos (3 hidden).
This repository contains a Python proof-of-concept exploit for CVE-2015-8562, a critical remote code execution vulnerability in Joomla (versions 1.5.0 through 3.4.5) due to unsafe PHP object deserialization. The main exploit script, 'joomla-cve-2015-8562.py', allows an attacker to execute arbitrary system commands or spawn a reverse shell on a vulnerable Joomla server by sending a specially crafted serialized PHP object in the User-Agent or X-Forwarded-For HTTP header. The script supports both blind command execution and reverse shell payloads (Python or Bash), and can optionally use a proxy. The README provides usage instructions and technical background. The repository also includes an example Joomla session file for reference. The exploit is network-based, targeting HTTP endpoints, and drops shell scripts in the /tmp directory on the target. This is a functional proof-of-concept exploit, not a detection script, and demonstrates the full attack chain for remote code execution via this vulnerability.
This repository is a proof-of-concept (PoC) exploit for Joomla's CVE-2015-8562 vulnerability, which allows remote code execution via PHP object injection through the HTTP User-Agent header. The main exploit logic is contained in 'exploit.php', which uses the Guzzle HTTP client to send specially crafted requests to a target Joomla site. The exploit constructs a malicious User-Agent header that triggers the vulnerability, allowing arbitrary PHP code execution on the server. The default payload demonstrates this by creating a file ('/tmp/itWorks') on the target, but the payload can be customized. The repository includes a README with background information, usage instructions, and references to the original vulnerability and related exploits. The only required configuration is to set the target URL in 'exploit.php' to the victim Joomla site. The exploit is a standalone PHP script and does not rely on any exploitation framework.
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