CVE-2024-33764 in lunasvg
Summary
by MITRE • 05/01/2024
lunasvg v2.3.9 was discovered to contain a stack-overflow at lunasvg/source/element.h.
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Analysis
by VulDB Data Team • 06/14/2025
The vulnerability identified as CVE-2024-33764 affects lunasvg version 2.3.9 and represents a critical stack overflow condition within the library's element handling functionality. This issue resides in the lunasvg/source/element.h file, indicating that the flaw occurs during the processing of SVG elements within the library's parsing mechanism. The stack overflow vulnerability arises when the library processes malformed or specially crafted SVG input that triggers improper memory allocation or buffer handling during element parsing operations.
The technical nature of this vulnerability stems from inadequate input validation and memory management within the SVG element processing code. When lunasvg encounters certain SVG elements or attributes that exceed expected parameter limits, the stack-based buffer overflow occurs due to insufficient bounds checking or improper memory allocation strategies. This type of vulnerability falls under CWE-121 Stack-based Buffer Overflow, which is classified as a fundamental memory safety issue that can lead to arbitrary code execution or system instability. The vulnerability is particularly dangerous because SVG files are commonly used in web applications, mobile applications, and desktop software, making the attack surface broad and potentially exploitable in multiple contexts.
The operational impact of CVE-2024-33764 extends beyond simple application crashes, as this stack overflow can potentially enable remote code execution when the affected library processes untrusted SVG content. Attackers could craft malicious SVG files that, when loaded by applications using lunasvg v2.3.9, would trigger the buffer overflow condition and potentially allow for privilege escalation or arbitrary code execution on the target system. This vulnerability is particularly concerning in web browsers, content management systems, and applications that process SVG graphics from untrusted sources, as it could be exploited through common attack vectors such as cross-site scripting or file upload vulnerabilities. The ATT&CK framework would categorize this as a software exploitation technique under the T1059.007 sub-technique for command and scripting interpreter, as successful exploitation could lead to full system compromise.
Mitigation strategies for CVE-2024-33764 primarily focus on immediate version updates to lunasvg v2.3.10 or later, which contains the necessary patches to address the stack overflow condition. Organizations should conduct comprehensive vulnerability assessments to identify all applications and systems that utilize the affected library, particularly those that process SVG content from external sources. Additionally, implementing input validation measures such as strict SVG schema validation, limiting file size parameters, and employing sandboxing techniques can provide additional protective layers. Network segmentation and access controls should be reviewed to limit potential attack vectors, while monitoring systems should be configured to detect anomalous SVG processing activities. The patching process should be prioritized in environments where the affected library processes untrusted content, as the vulnerability could be exploited remotely through web applications or other attack surfaces that utilize the affected SVG processing library.