CVE-2023-28963 : Security Advisory and Response

An Improper Authentication vulnerability in cert-mgmt.php, used by the J-Web component of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to read arbitrary files from temporary folders on the device.

Understanding CVE-2023-28963

This CVE affects Junos OS and has a significant impact on the security of affected systems. Understanding the technical details is crucial in mitigating the risks associated with this vulnerability.

What is CVE-2023-28963?

CVE-2023-28963 is classified as an Improper Authentication vulnerability in Juniper Networks Junos OS, specifically in the cert-mgmt.php component used by the J-Web interface. This vulnerability enables unauthenticated attackers to access sensitive data stored in temporary folders on the device.

The Impact of CVE-2023-28963

The impact of this vulnerability is noteworthy as it allows unauthorized access to critical files, potentially leading to further exploitation and unauthorized disclosure of information. Understanding the severity of this impact is vital for organizations using Junos OS.

Technical Details of CVE-2023-28963

The technical details of CVE-2023-28963 include information on the vulnerability description, affected systems and versions, and the exploitation mechanism.

Vulnerability Description

The vulnerability in cert-mgmt.php allows attackers to read arbitrary files from temporary folders on the device, compromising the confidentiality of sensitive information.

Affected Systems and Versions

Junos OS versions from 19.1R3-S10 to 22.3R2 are affected by this vulnerability, highlighting the widespread impact across different versions of the operating system.

Exploitation Mechanism

The exploitation of CVE-2023-28963 occurs through network-based attacks without the need for any user privileges, making it a significant threat to the security of Juniper Networks Junos OS.

Mitigation and Prevention

Taking immediate steps to address CVE-2023-28963 and implementing long-term security practices are essential to safeguard systems from potential exploitation.

Immediate Steps to Take

To mitigate the risks associated with this vulnerability, organizations can disable J-Web or limit access to only trusted hosts to prevent unauthorized access to the affected component.

Long-Term Security Practices

In the long term, organizations should prioritize regular security assessments, implement access controls, and stay informed about software updates to protect against similar vulnerabilities in the future.

Patching and Updates

Juniper Networks has released software updates to address CVE-2023-28963. Organizations are advised to update to the following fixed versions: Junos OS 19.1R3-S10, 19.2R3-S7, 19.3R3-S8, 19.4R3-S11, 20.2R3-S7, 20.4R3-S6, 21.1R3-S5, 21.2R3-S4, 21.3R3-S3, 21.4R3-S3, 22.1R3-S1, 22.2R2-S1, 22.2R3, 22.3R1-S2, 22.3R2, 22.4R1, and all subsequent releases.