Threat intelligence
Cisco WebEx URL Remote Command Execution vulnerability (Jan 24, 2017)
As disclosed here Cisco's WebEX plugin for chrome browser allows Remote Command Execution when the URL contains the magic pattern "cwcsf-nativemsg-iframe-43c85c0d-d633-af5e-c056-32dc7efc570b.html".
This "magic" pattern is used by the WebEx service to remotely start a meeting.This allows the attacker to execute malicious commands remotely.
Here the magic pattern is embedded in an iframe.
The exploit has the code to open the calculator application.
SonicWALL Threat Research Team has researched this vulnerability and released following signature to protect their customers.
- IPS 12588:Cisco WebEx URL Remote Command Execution
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The SonicWall Capture Labs Threat Research Team gathers, analyzes and vets cross-vector threat information from the SonicWall Capture Threat network, consisting of global devices and resources, including more than 1 million security sensors in nearly 200 countries and territories. The research team identifies, analyzes, and mitigates critical vulnerabilities and malware daily through in-depth research, which drives protection for all SonicWall customers. In addition to safeguarding networks globally, the research team supports the larger threat intelligence community by releasing weekly deep technical analyses of the most critical threats to small businesses, providing critical knowledge that defenders need to protect their networks.