CVE-2017-2922 : Vulnerability Insights and Analysis

Cesanta Mongoose 6.8 contains a critical memory corruption vulnerability in its Websocket protocol implementation, allowing remote code execution.

Understanding CVE-2017-2922

What is CVE-2017-2922?

The vulnerability in Cesanta Mongoose 6.8 enables attackers to exploit the Websocket protocol, leading to memory corruption and potential remote code execution.

The Impact of CVE-2017-2922

The vulnerability has a CVSS base score of 9.8 (Critical) with high impacts on confidentiality, integrity, and availability. Attackers can exploit this flaw to execute code remotely.

Technical Details of CVE-2017-2922

Vulnerability Description

Cesanta Mongoose 6.8 has a memory corruption issue in its Websocket protocol implementation.
Crafting a specific websocket packet triggers buffer allocation, leaving behind stale pointers and creating a use-after-free vulnerability.
Exploiting this vulnerability allows attackers to execute code remotely.

Affected Systems and Versions

Product: Mongoose
Vendor: Cesanta
Version: 6.8

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: None
Scope: Unchanged
User Interaction: None
Exploitation involves sending a carefully crafted websocket packet over the network.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Monitor network traffic for any suspicious websocket packets.
Implement network segmentation to limit the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Conduct security assessments and penetration testing to identify and mitigate risks.

Patching and Updates

Stay informed about security advisories from Cesanta and apply patches as soon as they are available.