CVE-2024-29506 identifies a stack-based buffer overflow vulnerability in the pdfi_apply_filter() function of Artifex Ghostscript versions prior to 10.03.0. Ghostscript is a widely used interpreter for PostScript and PDF files, often embedded in document processing and printing workflows. The vulnerability arises when the function processes a PDF filter name that exceeds expected length limits, causing a buffer overflow on the stack (CWE-120). This overflow can overwrite adjacent memory, potentially leading to program crashes or controlled manipulation of execution flow. The attack vector is remote network (AV:N), requiring no privileges (PR:N) but does require user interaction (UI:R), such as opening a crafted PDF file. The scope is unchanged (S:U), meaning the impact is limited to the vulnerable component. The CVSS v3.1 base score is 5.4, indicating medium severity with impact primarily on availability (A:L) and limited integrity impact (I:L), but no confidentiality loss (C:N). No patches or exploit code are currently publicly available, and no known exploits in the wild have been reported. The vulnerability is significant because Ghostscript is embedded in many document processing systems, and malicious PDFs could be used as an attack vector in targeted or opportunistic attacks.

The primary impact of CVE-2024-29506 is the potential for denial of service through application crashes when processing malicious PDF files containing overly long filter names. In some scenarios, the buffer overflow could be leveraged to execute arbitrary code, though this is not confirmed and would require precise exploitation techniques. Organizations relying on Ghostscript for PDF rendering, printing, or conversion—especially in automated workflows—may face service disruptions or compromise of system integrity. This could affect document management systems, print servers, and software development environments that integrate Ghostscript. The vulnerability does not directly impact confidentiality but could be a foothold for further attacks if exploited for code execution. The lack of authentication requirements and the need only for user interaction increase the risk, especially in environments where untrusted PDFs are handled. The absence of known exploits reduces immediate risk but does not eliminate the threat, as attackers may develop exploits in the future.

To mitigate CVE-2024-29506, organizations should upgrade Artifex Ghostscript to version 10.03.0 or later once available, as this version addresses the buffer overflow. Until a patch is applied, implement strict input validation and filtering on PDF files entering the environment, especially from untrusted sources. Employ sandboxing or containerization for Ghostscript processes to limit the impact of potential exploitation. Disable or restrict PDF filter features if not required by the workflow. Monitor logs for crashes or unusual behavior in Ghostscript-related services. Educate users to avoid opening suspicious PDF files and use email gateways or endpoint protection solutions that scan and block malicious documents. For environments where immediate patching is not feasible, consider replacing Ghostscript with alternative PDF processing tools that do not have this vulnerability. Regularly review and update security policies regarding document handling and processing.