A recent vulnerability discovered in the web-based management interface of Cisco Identity Services Engine (ISE) has the potential to put users at risk of cross-site scripting (XSS) attacks. This vulnerability, designated as CVE-2022-20967, is a result of improper validation of input in the application feature before it is stored within the management interface. To exploit this weakness, an attacker needs to create entries within the application interface containing malicious HTML or script code, which, if successful, can lead to the storage of malicious code and subsequent XSS attacks on users.

Code Snippet

As an example, let us consider an attacker who attempts to inject a malicious script into the Cisco ISE web-based management interface. An entry in the interface might look like the following:

  "username": "exampleuser",
  "email": "user@example.com", 
  "bio": "<script>malicious_code_here</script>"

In the example above, the attacker has included a <script> tag containing malicious code within the "bio" field of the user details. If this input is not properly validated and filtered by the application, the injected code may be stored and executed when other users access the management interface.

Original References

The CVE-2022-20967 vulnerability was discovered by security researchers at [CompanyName] and responsibly disclosed to Cisco. For more information, the following resources can be consulted:

1. CompanyName's Security Advisory
2. Cisco Security Advisory
3. CVE Details

Exploit Details

To exploit this vulnerability, the attacker must first authenticate to the web-based management interface of Cisco Identity Services Engine. Once authenticated, the attacker can then create entries with malicious HTML or script code within the application interface, designed to target unsuspecting users. When these users access the management interface, the malicious code within the stored entries will execute, potentially resulting in unauthorized access or control over user accounts and data.

It is important to note that Cisco has not yet released software updates addressing this vulnerability, making it critical for administrators to remain vigilant and watch for patches that will resolve the issue. In the meantime, users should exercise caution when interacting with web-based management interfaces to avoid falling victim to attacks from exploiting CVE-2022-20967.

In conclusion, CVE-2022-20967 represents a serious vulnerability in the web-based management interface of Cisco Identity Services Engine, one which can lead to dangerous cross-site scripting attacks. Ensuring that input in web-based applications is properly validated and filtered is crucial in preventing such vulnerabilities, and administrators should always be on the lookout for security updates and patches to address emerging threats. Stay safe, and let's work together to keep the internet secure for all.


Published on: 01/20/2023 07:15:00 UTC
Last modified on: 01/26/2023 18:13:00 UTC