CVE-2023-32671 in BuddyBoss
Summary
by MITRE • 10/25/2023
A stored XSS vulnerability has been found on BuddyBoss Platform affecting version 2.2.9. This vulnerability allows an attacker to store a malicious javascript payload via POST request when sending an invitation.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 10/25/2023
The stored cross-site scripting vulnerability identified as CVE-2023-32671 represents a critical security flaw within the BuddyBoss Platform version 2.2.9, specifically targeting the invitation sending functionality. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, where malicious code can be injected and subsequently executed in the context of other users' browsers. The flaw enables attackers to persistently inject javascript payloads through POST requests when users send invitations, creating a persistent threat that affects all users who interact with the compromised invitation system.
The technical implementation of this vulnerability exploits the platform's insufficient input validation and output sanitization mechanisms within the invitation processing workflow. When users submit invitations through the POST request interface, the system fails to properly sanitize or escape user-supplied data before storing it within the application's database. This allows an attacker to embed malicious javascript code within the invitation content, which gets stored and later executed whenever other users view or interact with the invitation. The stored payload can potentially leverage the victim's authenticated session, enabling unauthorized actions such as account takeovers, data exfiltration, or redirection to malicious sites.
The operational impact of CVE-2023-32671 extends beyond simple script execution, as it creates a persistent backdoor within the platform that can be exploited by attackers to compromise user sessions and access sensitive information. This vulnerability directly violates the principle of least privilege and can be leveraged for privilege escalation attacks, particularly when combined with other exploitation techniques. The stored nature of the vulnerability means that even if the initial attacker's session ends, the malicious payload continues to affect all users who encounter the invitation, making it a particularly dangerous threat vector. Attackers can craft sophisticated payloads that harvest cookies, redirect users to phishing sites, or execute additional malicious operations using the victim's elevated privileges.
Security professionals should implement immediate mitigations including input validation and output encoding for all invitation-related endpoints, ensuring that all user-supplied content undergoes strict sanitization before database storage. The platform should enforce proper Content Security Policy headers and implement comprehensive input validation at multiple layers of the application architecture. Organizations should also consider implementing web application firewalls to detect and block suspicious payload patterns, while monitoring for unusual invitation activity that might indicate exploitation attempts. This vulnerability aligns with ATT&CK technique T1566.001 for initial access through spearphishing attachments and T1059.007 for command and control through script-based payloads. The recommended remediation includes updating to the patched version of BuddyBoss Platform, implementing proper security headers, and conducting comprehensive security testing of all user input handling mechanisms.