Full Report
Last weekend was the BSides Cape Town conference, currently ZA’s only hacker con. It’s a cool little con with big dreams that get a little closer each time. This year was a lot a fun and well put together, congrats to all of the speakers organisers and volunteers. SP gave some talks; Charl spoke about where we’re headed in a talk entitled Love Triangles in CyberSpace; a tale about trust in 5 chapters. Chris discussed his DLL preloading work and released his toolset. Finally, Darryn & Thomas spoke about exploiting unauth’ed X sessions and released their tool XRDP, it was also their first con talk ever.
Analysis Summary
# Main Topic
The primary focus is a summary of presentations and technical releases from the BSides Cape Town conference, specifically highlighting novel security research presented by attendees associated with SensePost (SP).
## Key Points
- **Multiple Security Talks Presented:** Contributors from SP presented on several topics including trust dynamics, DLL preloading vulnerabilities, and exploitation of unauthenticated X sessions.
- **Tool Releases:** Specific tools were released alongside presentations: a toolset for DLL preloading exploitation and the XRDP tool for X session exploitation.
- **Exploitation of X Sessions:** A significant technical release involved research into exploiting unauthenticated X sessions (likely via RDP/XDP mechanisms, suggested by the tool name XRDP).
- **DLL Preloading Research Disclosed:** Work detailing the identification and exploitation of DLL preloading vulnerabilities was discussed, with a corresponding toolset released.
## Threat Actors
- This section is not applicable. The context describes security researchers presenting findings, not active threat actors or campaigns.
## TTPs
- **DLL Preloading Exploitation:** Techniques related to identifying and exploiting vulnerable DLL preloading configurations.
- **Exploiting Unauthenticated X Sessions:** Techniques used to compromise systems via unauthenticated sessions, likely targeting remote desktop functionality leading to X server compromise.
## Affected Systems
- **Systems utilizing X Sessions/RDP:** Systems accessible via unauthenticated remote desktop or X session protocols were the target of the exploitation research.
- **Windows Systems (Implied):** DLL preloading is predominantly relevant to Windows environments.
## Mitigations
- **For DLL Preloading:** Specific mitigations are not detailed in this summary, but the implicit mitigation is securing application deployment chains to prevent the loading of malicious DLLs.
- **For Unauthenticated X Sessions:** Restricting or eliminating anonymous/unauthenticated access to critical remote session services (like XDP/RDP interfaces).
- **Tool Specific:** The context highlights the release of the **XRDP** tool by researchers, implying that patching or hardening the specific vulnerable components targeted by this exploit is necessary.
## Conclusion
The BSides Cape Town conference featured several important technical disclosures by members of the security community, including novel research on exploiting unauthenticated X sessions and leveraging DLL preloading flaws. Organizations should review their configurations for these weaknesses and ensure that published tools/research findings are used to harden relevant remote access and application loading mechanisms. The release of the XRDP tool suggests a specific vulnerability pathway related to unauthenticated X sessions that warrants immediate investigation.