Headline
CVE-2023-22843: NN-2023:4-01 - Stored Cross-Site Scripting (XSS) in Threat Intelligence rules in Guardian/CMC before 22.6.2 - CVE-2023-22843
An authenticated attacker with administrative access to the appliance can inject malicious JavaScript code inside the definition of a Threat Intelligence rule, that will later be executed by another legitimate user viewing the details of such a rule. An attacker may be able to perform unauthorized actions on behalf of legitimate users. JavaScript injection was possible in the content for Yara rules, while limited HTML injection has been proven for packet and STYX rules. The injected code will be executed in the context of the authenticated victim’s session.
Summary
An authenticated attacker with administrative access to the appliance can inject malicious JavaScript code inside the definition of a Threat Intelligence rule, that will later be executed by another legitimate user viewing the details of such a rule.
Impact
An attacker may be able to perform unauthorized actions on behalf of legitimate users. JavaScript injection was possible in the content for Yara rules, while limited HTML injection has been proven for packet and STYX rules. The injected code will be executed in the context of the authenticated victim’s session.
Affected Products
Guardian, CMC < v22.6.2
Workarounds and Mitigations
Use internal firewall features to limit access to the web management interface.
Solutions
Upgrade to v22.6.2 or later.
Modification History
2023-08-09: Initial revision
Related Links****Acknowledgements
This issue was found by Stefano Libero of Nozomi Networks Product Security team during a scheduled internal VAPT testing session.