CVE-2014-9822 in ImageMagick
Summary
by MITRE
Heap-based buffer overflow in ImageMagick allows remote attackers to have unspecified impact via a crafted quantum file.
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Analysis
by VulDB Data Team • 10/31/2024
The heap-based buffer overflow vulnerability in ImageMagick identified as CVE-2014-9822 represents a critical security flaw that exposes systems to remote exploitation through malformed quantum file inputs. This vulnerability resides within the image processing library's handling of quantum data structures, where insufficient bounds checking allows maliciously crafted input to overwrite adjacent memory regions in the heap allocation space. The flaw specifically affects the library's ability to process quantum files that contain improperly structured data, enabling attackers to manipulate memory layout and potentially execute arbitrary code.
The technical implementation of this vulnerability stems from inadequate input validation within ImageMagick's quantum processing routines, which are responsible for handling high-precision image data formats. When the library encounters a crafted quantum file, the parsing logic fails to properly validate array bounds during memory allocation operations, creating opportunities for heap corruption. This type of vulnerability falls under CWE-121 Heap-based Buffer Overflow, which is classified as a serious weakness that can lead to complete system compromise when exploited by remote attackers. The heap overflow occurs because the application allocates memory based on user-supplied values without proper verification of the data integrity, allowing attackers to control the memory layout through carefully crafted input sequences.
The operational impact of CVE-2014-9822 extends beyond simple denial of service scenarios, as it provides attackers with potential pathways for privilege escalation and remote code execution. Systems utilizing ImageMagick for image processing, including web applications, content management systems, and file upload services, become vulnerable to exploitation when processing untrusted image files. The unspecified impact mentioned in the CVE description reflects the potential for various attack vectors including arbitrary code execution, system crashes, or information disclosure, making this vulnerability particularly dangerous in environments where users can upload files or submit image data. Attackers leveraging this vulnerability can potentially execute malicious payloads in the context of the affected application, leading to complete system compromise and unauthorized access to sensitive data.
Mitigation strategies for CVE-2014-9822 should prioritize immediate patching of affected ImageMagick installations, as the vulnerability has been addressed through official security updates that include proper bounds checking and input validation mechanisms. Organizations should implement network segmentation and access controls to limit exposure, particularly for systems that process untrusted image uploads. Security monitoring should focus on detecting unusual image processing activities and file upload patterns that might indicate exploitation attempts. Additionally, implementing proper input sanitization at multiple layers, including web application firewalls and file validation routines, can provide additional defense-in-depth measures. The vulnerability demonstrates the importance of secure coding practices and proper memory management in image processing libraries, aligning with ATT&CK technique T1059.007 for command and scripting interpreter execution and T1133 for external remote services. Regular security assessments and vulnerability scanning should be conducted to identify similar issues in other image processing components and ensure comprehensive protection against heap-based buffer overflow attacks.