CVE-2020-8774 in PEGA Platform
Summary
by MITRE
Pega Platform before version 8.2.6 is affected by a Reflected Cross-Site Scripting vulnerability in the "ActionStringID" function.
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Analysis
by VulDB Data Team • 10/14/2020
The vulnerability identified as CVE-2020-8774 affects Pega Platform versions prior to 8.2.6 and represents a reflected cross-site scripting flaw within the "ActionStringID" function. This issue arises from insufficient input validation and output encoding mechanisms that fail to properly sanitize user-supplied data before incorporating it into web responses. The vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically manifesting as a reflected XSS attack vector where malicious scripts are executed in the victim's browser through crafted input parameters.
The technical exploitation of this vulnerability occurs when an attacker crafts malicious input containing script code that gets reflected back to the user's browser through the ActionStringID function. When the vulnerable application processes this input without proper sanitization, the malicious script executes in the context of the victim's browser session, potentially allowing attackers to hijack user sessions, steal sensitive information, or perform unauthorized actions on behalf of the victim. The reflected nature of this vulnerability means that the malicious payload must be delivered via a crafted URL or request that triggers the vulnerable code path, making it particularly dangerous in phishing campaigns or when users are tricked into clicking malicious links.
The operational impact of CVE-2020-8774 extends beyond simple script execution as it can enable attackers to perform session hijacking, credential theft, and data exfiltration from authenticated users. Given that Pega Platform is commonly used for business process management and customer relationship management, successful exploitation could lead to unauthorized access to sensitive business data, manipulation of business processes, and potential disruption of critical organizational operations. The vulnerability particularly affects environments where users interact with the platform through web interfaces, making it a significant concern for organizations that rely heavily on web-based application functionality.
Organizations should implement immediate mitigations including updating to Pega Platform version 8.2.6 or later, which contains the necessary patches to address this vulnerability. Additional protective measures include implementing proper input validation and output encoding mechanisms, deploying web application firewalls to detect and block malicious payloads, and conducting regular security testing to identify similar vulnerabilities. The ATT&CK framework categorizes this vulnerability under T1059.001 for Command and Scripting Interpreter and T1566 for Phishing, highlighting the need for comprehensive security controls. Security teams should also consider implementing content security policies and regular security awareness training for users to reduce the risk of successful exploitation through social engineering attacks that leverage this vulnerability.