Security Update for libgd2 Package
Summary
DLA-665-1: libgd2 - security update. Affects libgd2 versions < 2.0.36~rc1~dfsg-6.1+deb7u6. Fixed in 2.0.36~rc1~dfsg-6.1+deb7u6. How to fix ↓
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Background
The libgd2 package is a graphics library that allows developers to dynamically create and manipulate images. It provides functions for reading and writing various image formats, as well as performing image operations such as resizing and cropping. The package is widely used in applications that require image processing capabilities.
Vulnerability Detail
The libgd2 package is affected by two vulnerabilities:
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CVE-2016-6911: This vulnerability is an invalid read in the gdImageCreateFromTiffPtr() function. It could allow an attacker to read uninitialized or out-of-bounds memory, potentially leading to information disclosure or a crash. However, this vulnerability is not present in the Debian 7 Wheezy version of the package.
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CVE-2016-8670: This vulnerability is a stack buffer overflow in the GD dynamicGetbuf function. An attacker could exploit this vulnerability to execute arbitrary code or cause a denial of service by crashing the application.
How To Fix
Minimum fixed version
2.0.36~rc1~dfsg-6.1+deb7u6
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 →
Workaround
There are no known workarounds for these vulnerabilities.
Conclusion
To ensure the security of your system, it is highly recommended to upgrade the libgd2 package to version 2.0.36~rc1~dfsg-6.1+deb7u6 or later. This will help protect against potential information disclosure, denial of service, or remote code execution. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for libgd2 →
FAQ
The impact of these vulnerabilities can vary depending on the specific use case and the presence of other security measures. However, they could potentially lead to information disclosure, denial of service, or remote code execution.
At the time of this advisory, there are no known public exploits for these vulnerabilities. However, it is always recommended to apply security updates as soon as they become available.
In most cases, it is not necessary to restart the application after updating the libgd2 package. However, if the application dynamically loads the affected library, it may be required to restart or reload the application for the changes to take effect.
Yes, these vulnerabilities can be exploited remotely if the affected application is exposed to untrusted network connections. It is important to apply the security update to mitigate the risk.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, on the Debian Wiki page dedicated to LTS security advisories.
Related vulnerabilities
Recent vulnerabilities recorded for libgd2.
