Source: cna@vuldb.com
A vulnerability was identified in Alinto SOGo 5.12.3/5.12.4. This impacts an unknown function. The manipulation of the argument hint leads to cross site scripting. The attack can be initiated remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way.
Alinto SOGo 5.12.3/5.12.4 is vulnerable to a cross-site scripting (XSS) attack due to improper handling of the 'hint' argument within an unspecified function. This allows attackers to inject malicious JavaScript code into the application, potentially leading to account compromise and data theft.
Step 1: Payload Delivery: The attacker crafts a malicious URL containing a specially crafted 'hint' parameter. This parameter includes the XSS payload (e.g., <script>alert('XSS')</script>).
Step 2: Request Submission: The attacker sends the malicious URL to a targeted user, potentially through phishing, email, or social engineering.
Step 3: Server Processing: The SOGo server receives the request and processes the 'hint' parameter.
Step 4: Vulnerable Rendering: The server, due to the lack of proper input validation and output encoding, renders the 'hint' parameter directly within the HTML response.
Step 5: Payload Execution: The user's browser executes the injected JavaScript payload, as it is treated as part of the webpage's content. This allows the attacker to execute arbitrary code within the user's browser context.
The vulnerability stems from insufficient input validation and output encoding of the 'hint' argument within a function of Alinto SOGo. The application fails to properly sanitize user-supplied input before rendering it in the web interface. This allows an attacker to inject malicious JavaScript code within the 'hint' parameter. When a user interacts with the vulnerable component, the injected script executes within the context of the user's browser, enabling the attacker to steal session cookies, redirect users to phishing sites, or deface the application. The lack of vendor response indicates a potential lack of security awareness or resources, increasing the risk of unpatched systems.
While no specific APTs are directly linked to this CVE at this time, the public availability of the exploit and the nature of XSS vulnerabilities make it attractive to various threat actors. This vulnerability could be leveraged by attackers for initial access, credential harvesting, or data exfiltration. CISA KEV status: Not Applicable (as of the provided date).
Network Intrusion Detection Systems (IDS) can be configured to detect malicious payloads within HTTP requests, specifically looking for XSS patterns in the 'hint' parameter.
Web Application Firewalls (WAFs) can be deployed to filter malicious requests containing XSS payloads.
Analyze web server logs for suspicious activity, such as unusual URL patterns or repeated requests containing XSS payloads.
Monitor user activity for unexpected behavior, such as redirects or unusual login attempts.
Implement robust input validation to sanitize the 'hint' parameter, ensuring that it only accepts expected data types and formats.
Implement output encoding (e.g., HTML encoding) to escape special characters within the 'hint' parameter before rendering it in the HTML response.
Apply the latest security patches from Alinto (when available).
Implement a Web Application Firewall (WAF) to filter malicious requests.
Regularly scan the application for vulnerabilities using automated tools.
Educate users about phishing and social engineering tactics to reduce the risk of successful attacks.