CVE-2010-3919 in Grani
Summary
by MITRE
Fenrir Grani 4.5 and earlier does not prevent interaction between web script and the clipboard, which allows remote attackers to read or modify the clipboard contents via a crafted web site.
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Analysis
by VulDB Data Team • 02/08/2019
The vulnerability identified as CVE-2010-3919 affects Fenrir Grani versions 4.5 and earlier, representing a critical security flaw in web browser implementation that directly compromises user data integrity and confidentiality. This vulnerability stems from insufficient sandboxing mechanisms that fail to properly isolate web script execution from system-level clipboard operations, creating an exploitable pathway for malicious actors to gain unauthorized access to sensitive information stored in the clipboard.
The technical flaw manifests through improper security boundaries between web content and operating system functionality, specifically allowing web scripts to directly interact with clipboard contents through JavaScript APIs or similar mechanisms. This represents a violation of the fundamental security principle of process isolation and sandboxing that modern browsers implement to prevent unauthorized system access. The vulnerability falls under the CWE-250 category of "Execute Code with Unusual or Unconventional Path" and aligns with ATT&CK technique T1115 which describes clipboard data collection as a method for information gathering and potential lateral movement within compromised systems.
Attackers can exploit this vulnerability by crafting malicious websites that leverage web scripting capabilities to read or modify clipboard contents without user consent or awareness. The operational impact extends beyond simple information theft, as clipboard contents often contain sensitive data such as passwords, encryption keys, personal identification numbers, or other confidential information that users may have copied from secure applications. This vulnerability enables persistent surveillance of user activities and can facilitate more sophisticated attacks including credential theft, session hijacking, or data exfiltration.
The security implications of this vulnerability are particularly severe in environments where users frequently handle sensitive information, as it provides attackers with a stealthy method of data collection that operates below the radar of typical security monitoring systems. The lack of proper input validation and access controls in the clipboard interaction mechanisms allows for both read and write operations, potentially enabling attackers to inject malicious content into the clipboard or extract sensitive information from it. Organizations should implement immediate mitigations including updating to Fenrir Grani versions that address this vulnerability, implementing browser security policies that restrict clipboard access, and deploying network monitoring solutions to detect suspicious clipboard activity patterns. Additionally, user education regarding the risks of visiting untrusted websites and the importance of clipboard security should be emphasized as part of comprehensive security awareness programs.