CVE-2007-0775 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the layout engine in Mozilla Firefox before 1.5.0.10 and 2.x before 2.0.0.2, Thunderbird before 1.5.0.10, and SeaMonkey before 1.0.8 allow remote attackers to cause a denial of service (crash) and potentially execute arbitrary code via certain vectors.
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Analysis
by VulDB Data Team • 01/12/2025
The vulnerability identified as CVE-2007-0775 represents a critical security flaw affecting the layout engine component of several Mozilla-based applications including Firefox, Thunderbird, and SeaMonkey. This issue stems from multiple unspecified vulnerabilities within the rendering engine that processes web content and email messages, creating a significant attack surface for malicious actors. The affected versions encompass Firefox 1.x and 2.x series, Thunderbird 1.5.0.9 and earlier, and SeaMonkey 1.0.7 and earlier releases, indicating this weakness persisted across multiple product lines and versions. The vulnerability's impact extends beyond simple denial of service, as it potentially enables remote code execution, making it particularly dangerous for users who regularly interact with web content or email messages from untrusted sources. The unspecified nature of the vulnerabilities suggests that multiple distinct flaws exist within the layout engine, each potentially exploitable through different attack vectors that could trigger the same ultimate outcome of system compromise or service disruption.
The technical implementation of this vulnerability resides within the core layout engine responsible for rendering HTML, CSS, and other web content elements. Attackers can exploit these weaknesses by crafting specially malformed content or web pages that, when processed by the affected browsers, trigger memory corruption or execution flow manipulation within the rendering engine. The attack vectors typically involve delivering malicious content through web pages, email messages, or other media that the affected applications process and render. The specific mechanisms by which these vulnerabilities manifest include buffer overflows, memory corruption issues, and potential code execution pathways that allow attackers to manipulate the execution context of the browser process. These flaws leverage the fundamental way the layout engine handles various content types and rendering operations, making them particularly insidious as they can be triggered through normal browsing or email operations without requiring special privileges or user interaction beyond visiting a malicious site or opening an infected email.
The operational impact of CVE-2007-0775 extends significantly beyond simple service disruption, creating potential for complete system compromise when exploited successfully. Remote attackers can leverage these vulnerabilities to cause immediate denial of service through browser crashes, effectively disrupting user productivity and potentially creating opportunities for more sophisticated attacks. The potential for arbitrary code execution means that successful exploitation could allow attackers to gain full control over affected systems, execute malicious software, steal sensitive data, or establish persistent access points. This vulnerability particularly affects enterprise environments where users frequently access the internet and process email messages, creating substantial risk for organizations that have not updated their software to patched versions. The widespread adoption of affected Mozilla-based applications means that this vulnerability could impact hundreds of thousands of systems globally, making it a prime target for automated exploitation campaigns.
Mitigation strategies for CVE-2007-0775 primarily center on immediate software updates and patches provided by Mozilla. Organizations should prioritize updating all affected applications to their patched versions including Firefox 1.5.0.10 and 2.0.0.2, Thunderbird 1.5.0.10, and SeaMonkey 1.0.8. Additionally, implementing network-based security controls such as web application firewalls and content filtering systems can provide additional protection layers. Security administrators should consider implementing browser hardening techniques, including disabling unnecessary features, restricting access to potentially malicious content, and monitoring for suspicious network activity. The vulnerability aligns with CWE-119, which addresses memory safety issues including buffer overflows and memory corruption, and corresponds to ATT&CK techniques involving code injection and privilege escalation. Regular security assessments and vulnerability scanning should be implemented to identify any remaining unpatched systems within the organization's infrastructure, as this vulnerability could be exploited in targeted attacks against specific user populations or organizations with outdated software deployments.