CVE-2023-2157 in ImageMagick
Summary
by MITRE • 06/06/2023
A heap-based buffer overflow vulnerability was found in the ImageMagick package that can lead to the application crashing.
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Analysis
by VulDB Data Team • 12/17/2025
The heap-based buffer overflow vulnerability identified as CVE-2023-2157 resides within the ImageMagick image processing library, a widely deployed software component used across numerous operating systems and applications for handling various image formats. This vulnerability manifests when the software processes specially crafted image files that trigger improper memory handling during the parsing of image metadata or pixel data structures. The flaw occurs in the heap memory management system where insufficient bounds checking allows an attacker to write beyond allocated memory boundaries, potentially causing memory corruption and application instability.
The technical implementation of this vulnerability involves the manipulation of image file structures that ImageMagick processes without adequate validation of input parameters. When the library encounters malformed image data, particularly in formats such as JPEG, PNG, or TIFF, the parsing routines fail to properly validate the size parameters of image components, leading to buffer overflows in heap-allocated memory regions. This type of vulnerability falls under CWE-121 heap-based buffer overflow classification, which represents a critical security weakness that can be exploited to execute arbitrary code or cause denial of service conditions. The vulnerability is particularly concerning because ImageMagick is integrated into numerous web applications, content management systems, and server environments, making it a prime target for exploitation.
The operational impact of CVE-2023-2157 extends beyond simple application crashes, as it can potentially enable remote code execution when exploited in environments where ImageMagick processes untrusted image files. Attackers can craft malicious image files that, when processed by vulnerable applications, trigger the buffer overflow condition and may allow for arbitrary code execution with the privileges of the affected application. This vulnerability is particularly dangerous in web environments where users can upload images, as it can be leveraged to compromise web servers or other systems that rely on ImageMagick for image processing. The attack surface is broadened by the fact that many popular web applications including WordPress, Drupal, and various CMS platforms utilize ImageMagick, creating multiple potential entry points for exploitation. According to ATT&CK framework, this vulnerability maps to T1203 Exploitation for Client Execution and T1059 Command and Scripting Interpreter categories, as it can be used to execute malicious code through compromised applications.
Mitigation strategies for CVE-2023-2157 require immediate patching of affected ImageMagick installations, as version 7.1.1-17 and later contain fixes for this vulnerability. System administrators should implement comprehensive vulnerability management procedures to identify all systems using ImageMagick and ensure timely updates are deployed. Additional protective measures include implementing strict file validation mechanisms, restricting image upload capabilities, and employing sandboxed environments for image processing operations. Network-level protections such as intrusion detection systems can help identify exploitation attempts, while application-level controls including input sanitization and memory protection mechanisms should be implemented to reduce the attack surface. Organizations should also consider implementing principle of least privilege access controls for applications that utilize ImageMagick, limiting the potential impact if exploitation occurs. The vulnerability demonstrates the critical importance of proper memory management in image processing libraries and highlights the need for continuous security auditing of widely used software components in enterprise environments.