Vulnerability in libgd2 - Heap Overflow via Compressed gd2 Data
Summary
DSA-3556-1: libgd2 - security update. Affects libgd2 versions < 2.0.36~rc1~dfsg-6.1+deb7u2. Fixed in 2.0.36~rc1~dfsg-6.1+deb7u2. How to fix ↓
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Background
libgd2 is a library used for programmatic graphics creation and manipulation. It provides functions for creating and manipulating images, as well as drawing lines, shapes, and text. The library is commonly used in various applications to generate and modify images. However, a signedness vulnerability has been discovered in libgd2 that can lead to a heap overflow when processing specially crafted compressed gd2 data. This vulnerability can be exploited by a remote attacker to crash an application using libgd2 or potentially execute arbitrary code with the privileges of the user running the application.
Vulnerability Detail
The vulnerability in libgd2 arises from a signedness issue when processing compressed gd2 data. By providing specially crafted data, an attacker can trigger a heap overflow, potentially leading to a crash or arbitrary code execution. This vulnerability poses a significant risk to applications that utilize libgd2 for image manipulation. Attackers can exploit this vulnerability remotely, without requiring any authentication. It is crucial to address this vulnerability promptly to prevent potential security breaches.
How To Fix
Minimum fixed version
2.0.36~rc1~dfsg-6.1+deb7u2
This is the first release that contains the fix.
sudo apt-get install --only-upgrade libgd2Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The vulnerability in libgd2 can be exploited by a remote attacker to cause a crash or execute arbitrary code. To mitigate this risk, it is crucial to upgrade the libgd2 package to the fixed versions. Failure to address this vulnerability may result in security breaches and compromise the integrity of applications using libgd2. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for libgd2 →
FAQ
libgd2 is a library for programmatic graphics creation and manipulation. It provides functions for generating and modifying images, as well as drawing lines, shapes, and text.
This vulnerability in libgd2 can result in a heap overflow, potentially leading to a crash or arbitrary code execution. Attackers can exploit this remotely without authentication, posing a significant risk to applications using libgd2.
By providing specially crafted compressed gd2 data, an attacker can trigger a heap overflow in libgd2, potentially leading to a crash or arbitrary code execution.
The vulnerability affects libgd2 versions prior to 2.0.36~rc1~dfsg-6.1+deb7u2 for the oldstable distribution (wheezy), and versions prior to 2.1.0-5+deb8u1 for the stable distribution (jessie).
To fix this vulnerability, upgrade the libgd2 package to the fixed versions: 2.0.36~rc1~dfsg-6.1+deb7u2 for wheezy, 2.1.0-5+deb8u1 for jessie, and 2.1.1-4.1 for sid.
Related vulnerabilities
Recent vulnerabilities recorded for libgd2.
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