CVE-2020-12772 : Vulnerability Insights and Analysis
Discover the security vulnerability in Ignite Realtime Spark 2.8.3 on Windows. Learn how an attacker can exploit this issue to collect (NT)LM hashes and potentially compromise computers. Find mitigation steps here.
An issue was discovered in Ignite Realtime Spark 2.8.3 (and the ROAR plugin for it) on Windows where a chat message can lead to the leakage of (NT)LM hashes, potentially compromising the user's computer.
Understanding CVE-2020-12772
This CVE highlights a security vulnerability in Ignite Realtime Spark 2.8.3 and the associated ROAR plugin on Windows.
What is CVE-2020-12772?
The vulnerability allows an attacker to collect (NT)LM hashes by sending them with an HTTP request when a chat message includes an IMG element with a SRC attribute pointing to an external host's IP address.
The Impact of CVE-2020-12772
Exploitation of this vulnerability could lead to the compromise of user credentials, enabling unauthorized access to the affected computer.
Technical Details of CVE-2020-12772
This section provides more in-depth technical insights into the CVE.
Vulnerability Description
The vulnerability in Ignite Realtime Spark 2.8.3 and the ROAR plugin allows for the unauthorized collection of (NT)LM hashes through crafted chat messages.
Affected Systems and Versions
- Ignite Realtime Spark 2.8.3 on Windows
- ROAR plugin for Ignite Realtime Spark
Exploitation Mechanism
- An attacker can include an IMG element in a chat message with a SRC attribute pointing to an external host's IP address.
- Upon access to the external host, the (NT)LM hashes of the user are sent with the HTTP request.
- Access can occur automatically if ROAR is configured for automatic access or if the user clicks on the link.
Mitigation and Prevention
Protecting systems from CVE-2020-12772 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable automatic access in the ROAR plugin configuration.
- Avoid clicking on links from untrusted sources.
- Monitor network traffic for suspicious activities.
Long-Term Security Practices
- Educate users on the risks of clicking on unknown links.
- Implement network segmentation to limit the impact of potential breaches.
- Regularly update and patch Ignite Realtime Spark and associated plugins.