CVE-2006-1790 in Firefox
Summary
by MITRE
A regression fix in Mozilla Firefox 1.0.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via the InstallTrigger.install method, which leads to memory corruption.
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Analysis
by VulDB Data Team • 06/22/2025
The vulnerability identified as CVE-2006-1790 represents a critical security flaw in Mozilla Firefox version 1.0.7 that emerged from a regression in the software's patching process. This issue specifically targets the InstallTrigger.install method, a JavaScript API component that enables web applications to initiate software installations from remote sources. The flaw demonstrates how seemingly routine security updates can introduce new attack vectors when not thoroughly tested across all existing functionality. The vulnerability classification aligns with CWE-122, which describes heap-based buffer overflow conditions, and falls under the broader category of memory corruption vulnerabilities that have historically been exploited for privilege escalation and arbitrary code execution.
The technical implementation of this vulnerability exploits the InstallTrigger.install method's handling of remote installation requests, creating conditions where malicious web content can manipulate memory structures within the browser's execution environment. When a specially crafted web page invokes this method with malformed parameters, the browser's memory management system encounters corrupted data structures that trigger unexpected behavior. This memory corruption can manifest as immediate application crashes or more insidiously, create conditions where attackers can inject and execute arbitrary code within the browser's context. The vulnerability's potential for remote code execution places it within the ATT&CK framework's technique T1059.007, which covers scripting languages, and specifically targets the browser's JavaScript engine execution environment.
The operational impact of this vulnerability extends beyond simple denial of service scenarios to encompass serious security risks for end users and organizations. Attackers can leverage this flaw to compromise user systems through drive-by downloads, where simply visiting a malicious website can result in system compromise without user interaction beyond normal browsing behavior. The vulnerability affects all users running Firefox 1.0.7, making it particularly dangerous as it represents a widely deployed browser version at the time of discovery. Organizations relying on Firefox for business operations face significant risk exposure, as this vulnerability could enable attackers to establish persistent access to corporate networks through compromised user endpoints. The memory corruption aspect of the vulnerability means that exploitation could potentially bypass standard security mechanisms like address space layout randomization and data execution prevention.
Mitigation strategies for CVE-2006-1790 primarily focus on immediate version upgrades to Firefox 1.0.8 or later, which contains the proper fix for the regression. System administrators should implement comprehensive patch management procedures to ensure all Firefox installations are updated promptly, as the vulnerability remains exploitable in older versions. Network-level protections such as web application firewalls and content filtering systems can provide additional defense layers by blocking known malicious installation requests. Security monitoring should include detection of unusual JavaScript execution patterns and installation requests from untrusted domains. The vulnerability highlights the importance of thorough regression testing in security patches, as the fix for one issue inadvertently created new attack surfaces. Organizations should also consider implementing browser hardening measures such as disabling unnecessary JavaScript features and restricting installation permissions for browser extensions to minimize the attack surface. The incident serves as a reminder of the critical importance of maintaining up-to-date security patches and the potential for security regressions to create new vulnerabilities in the patching process itself.