CVE-2023-20077 : Vulnerability Insights and Analysis

This CVE involves multiple vulnerabilities in the web-based management interface of Cisco Identity Services Engine (ISE) that could potentially allow an authenticated, remote attacker to download arbitrary files from the filesystem of an affected device. These vulnerabilities stem from insufficient input validation, enabling an attacker to exploit them by sending crafted HTTP requests to the device. The successful exploitation of these vulnerabilities could result in the unauthorized downloading of arbitrary files from the affected device's underlying filesystem.

Understanding CVE-2023-20077

This section will delve into the key aspects of CVE-2023-20077, outlining the vulnerability's description, impact, technical details, and mitigation strategies.

What is CVE-2023-20077?

CVE-2023-20077 refers to multiple vulnerabilities present in the Cisco Identity Services Engine (ISE) web interface, allowing a remote attacker to download arbitrary files from the target device's filesystem through crafted HTTP requests due to insufficient input validation.

The Impact of CVE-2023-20077

The impact of CVE-2023-20077 is significant as it exposes affected Cisco Identity Services Engine devices to the risk of unauthorized file downloads by malicious actors, potentially leading to unauthorized access to sensitive information stored on the device.

Technical Details of CVE-2023-20077

In this section, we will explore the technical details of the vulnerability, including its description, affected systems and versions, as well as the exploitation mechanism.

Vulnerability Description

The vulnerability arises from inadequate input validation in the web-based management interface of Cisco Identity Services Engine (ISE), enabling authenticated remote attackers to download arbitrary files from the device's filesystem.

Affected Systems and Versions

The impacted system by CVE-2023-20077 is the Cisco Identity Services Engine Software of unspecified versions, leaving them susceptible to exploitation by threat actors seeking unauthorized file access.

Exploitation Mechanism

Attackers can exploit these vulnerabilities by sending maliciously-crafted HTTP requests to the vulnerable Cisco Identity Services Engine (ISE) devices, initiating the download of arbitrary files from the filesystem.

Mitigation and Prevention

To address CVE-2023-20077 and enhance the security posture of affected systems, organizations and users are advised to undertake immediate steps, implement long-term security practices, and apply necessary patches and updates.

Immediate Steps to Take

It is recommended to restrict network access to the web-based management interface of Cisco Identity Services Engine, monitor for any unusual file downloads, and apply vendor-supplied patches promptly to mitigate the risk of exploitation.

Long-Term Security Practices

Implementing robust network segmentation, regular security audits, user access controls, and staying informed about security advisories can help bolster the overall security resilience of the infrastructure against similar vulnerabilities.

Patching and Updates

Cisco has released security advisories addressing CVE-2023-20077, containing patches and fixes for the identified vulnerabilities. Organizations are urged to apply these patches promptly to remediate the risks posed by the arbitrary file download vulnerabilities in the Cisco Identity Services Engine.

Stay proactive and vigilant in safeguarding your systems against potential cyber threats to ensure the integrity and confidentiality of your data.