Moderate Vulnerability in Ghostscript: Heap Buffer Overflow via JPEG 2000 Output Adapter
Summary
ALSA-2026:74464: Moderate: ghostscript security update. Affects ghostscript versions < 10.02.1-16.el10_2.1. Fixed in 10.02.1-16.el10_2.1. How to fix ↓
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Background
Ghostscript is a suite of software that provides utilities for rendering PostScript and PDF documents. It translates PostScript code into common bitmap formats, enabling the display and printing of documents. The package is widely used in various applications for document processing and printing tasks. However, it has recently been identified as having a security vulnerability that could potentially allow unauthorized access or manipulation of data.
Vulnerability Detail
The vulnerability identified in Ghostscript is a heap buffer overflow that occurs via the JPEG 2000 output adapter. This flaw can be exploited by attackers to execute arbitrary code, leading to potential data breaches or system compromise. The issue is rooted in the way Ghostscript handles JPEG 2000 images, which can result in memory corruption and unpredictable behavior of the application.
How To Fix
Minimum fixed version
10.02.1-16.el10_2.1
This is the first release that contains the fix.
sudo dnf update ghostscriptTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can restrict access to the Ghostscript utilities or avoid processing untrusted PostScript or PDF files until the update is applied. Additionally, implementing strict input validation can help mitigate the risk of exploitation.
Conclusion
The Ghostscript vulnerability identified as a heap buffer overflow poses a significant risk to users who rely on this software for document processing. It is crucial to update to the patched version to protect against potential exploitation. Users are encouraged to monitor their applications for vulnerabilities using tools like Vulert.
See every vulnerability recorded for ghostscript →
FAQ
Ghostscript is a software suite that interprets PostScript and PDF files, allowing them to be rendered and printed.
A heap buffer overflow is a type of vulnerability that occurs when a program writes more data to a buffer located on the heap than it can hold, potentially leading to memory corruption.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in your software. Simply upload your manifest file like package-lock.json to check for vulnerabilities.
Exploitation of this vulnerability could lead to unauthorized access, data breaches, or system compromise, allowing attackers to execute arbitrary code.
While updating is the best solution, you can mitigate the risk by restricting access to Ghostscript utilities and avoiding processing untrusted files.
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