CVE-2014-9852 in ImageMagick
Summary
by MITRE
distribute-cache.c in ImageMagick re-uses objects after they have been destroyed, which allows remote attackers to have unspecified impact via unspecified vectors.
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Analysis
by VulDB Data Team • 12/07/2024
The vulnerability identified as CVE-2014-9852 resides within the distribute-cache.c component of ImageMagick, a widely used image processing library that handles numerous image formats across various applications and platforms. This flaw represents a classic use-after-free vulnerability where the software improperly manages object lifecycle within its caching mechanism. The issue occurs when the system reuses memory objects that have already been freed or destroyed, creating a scenario where attacker-controlled data can potentially overwrite critical memory locations. Such memory corruption vulnerabilities are particularly dangerous because they can lead to arbitrary code execution or system instability when exploited properly.
The technical implementation of this vulnerability stems from improper memory management practices within the image processing pipeline. When ImageMagick processes images through its caching subsystem, it maintains references to various objects that represent image data, metadata, and processing states. The distribute-cache.c module fails to properly track object validity and may return references to objects that have already been deallocated during previous processing cycles. This memory management failure creates a window where attacker-controlled input can manipulate the system into accessing freed memory regions, potentially allowing for code injection or information disclosure. The unspecified vectors mentioned in the description indicate that the exploitation techniques could vary significantly depending on the specific execution context and target system configuration.
The operational impact of CVE-2014-9852 extends far beyond a single application due to ImageMagick's widespread adoption across web servers, content management systems, and various software platforms that process user-uploaded images. When exploited, this vulnerability could allow remote attackers to execute arbitrary code on affected systems with the privileges of the running process, potentially leading to complete system compromise. The unspecified impact reflects the broad range of potential consequences including denial of service, privilege escalation, or data exfiltration. Systems that process untrusted image files through ImageMagick are particularly vulnerable, making web applications, file sharing platforms, and content management systems prime targets for exploitation. The vulnerability's remote nature means that attackers can leverage it without requiring local system access, making it especially dangerous in internet-facing environments.
Mitigation strategies for CVE-2014-9852 should focus on immediate patching of affected ImageMagick installations, as this represents a critical security flaw that has been well-documented in the cybersecurity community. Organizations should prioritize updating to patched versions of ImageMagick that address the memory management issues in distribute-cache.c, with particular attention to versions that implement proper object lifecycle management. Network segmentation and input validation measures can provide additional defense-in-depth layers, though these are not substitutes for proper patching. The vulnerability aligns with CWE-416, which specifically addresses use-after-free conditions, and could potentially map to attack techniques in the MITRE ATT&CK framework under privilege escalation or code execution categories. System administrators should also consider implementing monitoring for unusual memory access patterns or process behavior that might indicate exploitation attempts, as well as maintaining up-to-date threat intelligence feeds that track exploitation activity related to this vulnerability.