CVE-2024-33767 in lunasvg
Summary
by MITRE • 05/01/2024
lunasvg v2.3.9 was discovered to contain a segmentation violation via the component composition_solid_source.
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Analysis
by VulDB Data Team • 03/14/2025
The vulnerability identified as CVE-2024-33767 affects lunasvg version 2.3.9 and involves a segmentation fault occurring within the composition_solid_source component. This represents a critical memory access violation that can lead to application crashes and potentially more severe security implications. The issue manifests when processing specific SVG content that triggers improper memory handling within the library's composition logic.
This vulnerability falls under the category of memory corruption flaws that can be exploited to cause denial of service or potentially enable remote code execution depending on the attack surface. The composition_solid_source functionality appears to handle solid color composition operations within SVG rendering, where malformed input can trigger invalid memory access patterns. Such segmentation faults typically occur when applications attempt to access memory locations that have not been properly allocated or have already been freed.
The operational impact of this vulnerability extends beyond simple application instability as it can be leveraged by attackers to disrupt services through controlled crashes. In environments where lunasvg is used for SVG processing, such as web applications, content management systems, or graphic rendering platforms, this flaw could enable attackers to perform denial of service attacks against affected systems. The vulnerability is particularly concerning in web-facing applications where SVG files are processed without proper input validation or sandboxing.
From a cybersecurity perspective, this issue aligns with CWE-125, which covers out-of-bounds read conditions, and may also relate to CWE-787, representing out-of-bounds write vulnerabilities. The ATT&CK framework categorizes this under privilege escalation and denial of service techniques, as attackers can exploit the segmentation fault to either crash services or potentially gain unauthorized access through memory corruption exploitation. The vulnerability demonstrates a classic example of insufficient input validation where the composition_solid_source component fails to properly validate or sanitize input parameters before processing.
Mitigation strategies should include immediate patching to the latest available version of lunasvg where the segmentation fault has been addressed. Organizations should also implement input validation measures that sanitize SVG content before processing, particularly focusing on solid color composition parameters. Additionally, deploying application sandboxing techniques and memory protection mechanisms such as address space layout randomization can help reduce the exploitability of such vulnerabilities. Regular security assessments and vulnerability scanning should be implemented to identify similar issues within the broader software supply chain that may be using vulnerable versions of this library.