CVE-2018-7636 Explained : Impact and Mitigation

A vulnerability in the "continue page" feature of PAN-OS 8.0.10 and earlier versions could allow attackers to inject malicious JavaScript or HTML through specially crafted URLs.

Understanding CVE-2018-7636

This CVE entry describes a security flaw in the URL filtering component of PAN-OS versions 8.0.10 and below.

What is CVE-2018-7636?

The vulnerability in the "continue page" of PAN-OS versions 8.0.10 and earlier allows attackers to potentially insert custom JavaScript or HTML by exploiting specific URL structures.

The Impact of CVE-2018-7636

The vulnerability could be exploited by malicious actors to execute arbitrary code within the context of the affected page, leading to various security risks.

Technical Details of CVE-2018-7636

This section provides more in-depth technical insights into the CVE-2018-7636 vulnerability.

Vulnerability Description

The flaw in the "continue page" functionality of PAN-OS 8.0.10 and older versions permits the injection of unauthorized JavaScript or HTML content via meticulously crafted URLs.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: PAN-OS 8.0.10 and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating URLs to inject malicious JavaScript or HTML code, potentially compromising the security of the system.

Mitigation and Prevention

Protecting systems from CVE-2018-7636 requires immediate actions and long-term security measures.

Immediate Steps to Take

Update PAN-OS to a non-vulnerable version immediately.
Implement URL filtering rules to block potentially malicious URLs.
Monitor network traffic for any suspicious activities.

Long-Term Security Practices

Regularly update and patch all software and firmware to prevent known vulnerabilities.
Conduct security audits and penetration testing to identify and address weaknesses.

Patching and Updates

Apply patches and updates provided by Palo Alto Networks to fix the vulnerability.