CVE-2024-29508 in Ghostscript
Summary
by MITRE • 07/03/2024
Artifex Ghostscript before 10.0.3.0 has a heap-based pointer disclosure (observable in a constructed BaseFont name) in the function pdf_base_font_alloc.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 06/14/2025
The vulnerability identified as CVE-2024-29508 affects Artifex Ghostscript versions prior to 10.0.3.0 and represents a heap-based pointer disclosure flaw within the pdf_base_font_alloc function. This issue manifests when processing PDF documents containing specially crafted BaseFont names that trigger memory access patterns exposing heap pointers to attackers. The vulnerability resides in the font handling mechanism of Ghostscript's PDF processing engine, specifically in how it allocates and manages base font structures during document interpretation.
The technical implementation of this flaw occurs during the parsing of PDF font dictionaries where the pdf_base_font_alloc function fails to properly validate or sanitize input parameters derived from BaseFont names. When an attacker constructs a malicious PDF document containing a crafted BaseFont name, the function processes this input without adequate boundary checks or pointer validation, leading to information disclosure through heap memory addresses that become accessible in the constructed font name. This pointer disclosure vulnerability falls under CWE-200, which specifically addresses information exposure, and represents a form of memory disclosure that can reveal sensitive heap layout information.
The operational impact of this vulnerability extends beyond simple information disclosure as it provides attackers with heap memory addresses that can be leveraged in more sophisticated exploitation techniques. While the immediate disclosure does not directly enable arbitrary code execution, it significantly aids in bypassing modern memory protection mechanisms such as address space layout randomization. Attackers can use the disclosed heap pointers to construct more effective exploitation payloads for subsequent attacks, particularly when combined with other vulnerabilities or when targeting systems where heap layout information is critical for successful exploitation. The vulnerability is particularly concerning in environments where Ghostscript processes untrusted PDF documents from web browsers or email systems.
Mitigation strategies for CVE-2024-29508 primarily involve upgrading to Artifex Ghostscript version 10.0.3.0 or later, which includes patches addressing the heap pointer disclosure issue. Organizations should also implement proper input validation and sanitization measures when processing PDF documents, particularly in environments where untrusted content is handled. The vulnerability demonstrates the importance of proper memory management and input validation in security-critical applications, aligning with ATT&CK technique T1059.007 for command and scripting interpreter and T1550.001 for unauthorized access through valid accounts. Additionally, network segmentation and content filtering measures can help reduce the attack surface by limiting exposure to potentially malicious PDF documents. The issue highlights the necessity of regular security updates and proper vulnerability management practices in maintaining secure software environments.