CVE-2022-35411 Explained : Impact and Mitigation

rpc.py through 0.6.0 allows Remote Code Execution because an unpickle occurs when the "serializer: pickle" HTTP header is sent. An unauthenticated client can cause the data to be processed with unpickle.

Understanding CVE-2022-35411

In this section, we will explore what CVE-2022-35411 is, its impacts, technical details, and mitigation strategies.

What is CVE-2022-35411?

The vulnerability in rpc.py through version 0.6.0 allows Remote Code Execution due to an unpickle occurring when the "serializer: pickle" HTTP header is sent. Despite JSON being the default data format, an unauthenticated client can trigger data processing with unpickle.

The Impact of CVE-2022-35411

The vulnerability can be exploited by unauthenticated remote attackers to execute arbitrary code on the target system, leading to potential unauthorized access, data breaches, and system compromise.

Technical Details of CVE-2022-35411

Let's delve into the technical aspects of the CVE-2022-35411, including vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

rpc.py through 0.6.0 is affected by a Remote Code Execution vulnerability arising from an unpickle operation triggered by the "serializer: pickle" HTTP header.

Affected Systems and Versions

The vulnerability impacts rpc.py versions up to 0.6.0, allowing attackers to exploit the deserialization of data using pickle, leading to remote code execution.

Exploitation Mechanism

An unauthenticated attacker can send a malicious request with the "serializer: pickle" header, forcing the server to unpickle data, potentially executing arbitrary code.

Mitigation and Prevention

To safeguard systems from CVE-2022-35411, immediate steps should be taken to mitigate the risk and prevent exploitation.

Immediate Steps to Take

Apply the latest patches and updates for rpc.py to address the vulnerability.
Restrict network access to vulnerable systems and services to limit exposure to potential attacks.

Long-Term Security Practices

Implement strong authentication mechanisms to prevent unauthorized access to sensitive systems.
Regularly monitor and audit network traffic and system logs for any suspicious activities.

Patching and Updates

Stay informed about security advisories and updates released by rpc.py maintainers, and ensure timely application of patches to eliminate the vulnerability and enhance system security.