CVE-2021-31380 : What You Need to Know

A configuration weakness in the JBoss Application Server component of Juniper Networks SRC Series allows a remote attacker to send a specially crafted query to disclose sensitive information in the HTTP response.

Understanding CVE-2021-31380

This CVE affects Juniper Networks SRC Series with specific vulnerable versions, potentially leading to information exposure through a crafted query.

What is CVE-2021-31380?

CVE-2021-31380 highlights a configuration weakness in Juniper Networks SRC Series, enabling a remote attacker to obtain sensitive data by exploiting the JBoss Application Server.

The Impact of CVE-2021-31380

The vulnerability allows attackers to access confidential information disclosed in the server's HTTP responses, increasing the risk of sensitive data exposure.

Technical Details of CVE-2021-31380

The CVE scores a CVSS base score of 5.3 with medium severity, affecting systems via a network attack vector with low attack complexity.

Vulnerability Description

The flaw permits the disclosure of sensitive data when a remote attacker sends a specific type of query to the web server.

Affected Systems and Versions

Juniper Networks SRC Series versions less than 4.12.0R5 and 4.13.0R3 are impacted by this vulnerability.

Exploitation Mechanism

Although the vulnerability is exploitable, Juniper SIRT has not identified any known malicious exploitation attempts.

Mitigation and Prevention

By applying the following software releases, users can resolve this issue: 4.12.0R5, 4.13.0R3, and newer versions.

Immediate Steps to Take

There are no practical workarounds available. Implementing security best practices is recommended to limit the attack surface.

Long-Term Security Practices

To enhance security posture, restrict access to network and devices to trusted entities and regularly review and apply security patches.

Patching and Updates

Ensure the timely installation of software updates and security patches to mitigate the risk of exploitation.