CVE-2015-1512 in FAMOC
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in FancyFon FAMOC before 3.17.4 allow remote attackers to inject arbitrary web script or HTML via the (1) LoginForm[username] to ui/system/login or the (2) order or (3) myorgs to index.php.
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Analysis
by VulDB Data Team • 04/12/2022
The vulnerability identified as CVE-2015-1512 represents a critical cross-site scripting flaw affecting the FancyFon FAMOC platform prior to version 3.17.4. This vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically targeting the application's input validation mechanisms. The flaw manifests in three distinct attack vectors that collectively demonstrate the platform's insufficient sanitization of user-supplied data. Attackers can exploit these vulnerabilities by injecting malicious scripts through the LoginForm[username] parameter when accessing the ui/system/login endpoint, or through the order and myorgs parameters when interacting with index.php. These attack surfaces represent fundamental weaknesses in the application's security architecture, particularly in how it handles authentication and navigation parameters.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize input parameters before rendering them in web responses. When the FancyFon FAMOC system processes the LoginForm[username] parameter, it directly incorporates user input into the HTML output without adequate encoding or filtering mechanisms. Similarly, the order and myorgs parameters in the index.php endpoint exhibit the same deficiency, allowing attackers to inject malicious payloads that execute in the context of other users' browsers. This type of vulnerability enables attackers to perform session hijacking, steal sensitive information, or redirect users to malicious websites. The impact is particularly severe given that the vulnerable parameters are part of core application functionality, making exploitation relatively straightforward and widespread.
The operational impact of CVE-2015-1512 extends beyond simple script injection, as it provides attackers with persistent access to user sessions and potentially sensitive organizational data. When attackers successfully exploit these vulnerabilities, they can execute arbitrary code in the victim's browser context, enabling them to access session cookies, modify application behavior, or redirect users to phishing sites. This vulnerability aligns with ATT&CK technique T1566.001 for credential access through phishing and T1059.001 for command and scripting interpreter execution. The attack vectors are particularly concerning because they target authentication and navigation parameters, which are frequently used by legitimate users, making the exploitation less detectable and more effective in maintaining persistent access to the system.
Organizations affected by this vulnerability should immediately implement comprehensive mitigations including input validation, output encoding, and proper parameter sanitization across all application endpoints. The recommended approach involves implementing strict input validation for all user-supplied parameters, particularly those used in authentication and navigation contexts. Additionally, developers should employ proper HTML encoding techniques when rendering user input in web responses to prevent script execution. The implementation of Content Security Policy headers can provide additional protection against XSS attacks by restricting script execution within the application. Security teams should also conduct thorough code reviews to identify similar vulnerabilities in other application components and establish proper security testing procedures including automated scanning and manual penetration testing to prevent future occurrences of this class of vulnerability.