CVE-2013-0783 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 19.0, Firefox ESR 17.x before 17.0.3, Thunderbird before 17.0.3, Thunderbird ESR 17.x before 17.0.3, and SeaMonkey before 2.16 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 05/05/2021
The vulnerability identified as CVE-2013-0783 represents a critical class of security flaws affecting the browser engine components of several Mozilla products including Firefox, Thunderbird, and SeaMonkey. This vulnerability exists within the core rendering and processing mechanisms of these applications, specifically targeting the browser engine that handles the interpretation and execution of web content. The affected versions encompass a range of releases including Firefox versions prior to 19.0, Firefox ESR 17.x versions before 17.0.3, Thunderbird versions before 17.0.3, Thunderbird ESR 17.x versions before 17.0.3, and SeaMonkey versions before 2.16. These products utilize the same underlying Gecko engine architecture, making them susceptible to the same exploitation vectors and attack surfaces.
The technical nature of this vulnerability manifests through unspecified attack vectors that result in memory corruption within the browser engine's processing routines. Memory corruption vulnerabilities typically occur when applications fail to properly validate or manage memory allocation and deallocation operations, leading to unpredictable behavior and potential code execution. The affected engine components likely handle various web technologies including javascript execution, HTML parsing, CSS processing, and network protocol handling, all of which can be manipulated to trigger the underlying memory management flaws. These vulnerabilities fall under the broader category of heap-based buffer overflows and use-after-free conditions that are commonly classified under CWE-125 (Out-of-bounds Read) and CWE-416 (Use After Free) within the CWE database. The exploitation of such vulnerabilities can lead to arbitrary code execution when attackers successfully manipulate memory structures to redirect program execution flow.
The operational impact of CVE-2013-0783 extends beyond simple denial of service conditions to potentially enable full system compromise. Remote attackers can leverage these vulnerabilities to cause application crashes through memory corruption, effectively creating denial of service scenarios that disrupt user productivity and system availability. More critically, the possibility of arbitrary code execution means that attackers could gain complete control over affected systems, potentially installing malware, exfiltrating sensitive data, or establishing persistent backdoors. The widespread adoption of Firefox and related Mozilla products across enterprise and personal computing environments amplifies the potential impact of this vulnerability. Organizations using these affected versions face significant risk as attackers can exploit these flaws through standard web browsing activities, making the attack surface particularly broad and accessible. The vulnerability affects not just individual users but also enterprise environments where these applications are deployed at scale, creating potential for large-scale compromise and data breaches.
Mitigation strategies for CVE-2013-0783 primarily focus on immediate software updates and patches provided by Mozilla. Organizations should prioritize upgrading to the patched versions of Firefox 19.0, Firefox ESR 17.0.3, Thunderbird 17.0.3, Thunderbird ESR 17.0.3, and SeaMonkey 2.16 or later. Additionally, network administrators should implement proactive security measures including web content filtering, browser hardening configurations, and monitoring for suspicious network activity. The implementation of security frameworks such as the ATT&CK framework can help identify potential exploitation patterns and monitor for indicators of compromise related to memory corruption attacks. Browser security enhancements like sandboxing, address space layout randomization, and data execution prevention should be enabled to reduce the impact of successful exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify additional weaknesses in the affected systems and ensure comprehensive protection against similar vulnerabilities. Organizations should also consider implementing network segmentation and access controls to limit the potential damage from successful exploitation attempts, as these vulnerabilities can lead to complete system compromise when exploited effectively.