Integer Overflow in apng2gif
Summary
DLA-981-1: apng2gif - security update. Affects apng2gif versions < 1.5-1+deb7u1. Fixed in 1.5-1+deb7u1. How to fix ↓
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Background
apng2gif is a package in the Debian 7 Wheezy ecosystem that converts Animated PNG (APNG) files to GIF format. It provides a command-line interface for this conversion process. The package is vulnerable to an integer overflow, leading to a heap-based buffer over-read/write. This vulnerability can be exploited by a remote attacker through a specially crafted APNG file, resulting in a denial of service (application crash).
Vulnerability Detail
The integer overflow vulnerability in apng2gif arises due to a lack of proper input validation. By providing malicious input in the form of a crafted APNG file, an attacker can trigger the overflow, causing the application to crash. This vulnerability has the potential to be exploited remotely, posing a risk to systems that process APNG files using apng2gif. The impact of this vulnerability is limited to a denial of service, as it does not allow for arbitrary code execution or privilege escalation.
How To Fix
Minimum fixed version
1.5-1+deb7u1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade apng2gifTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended course of action is to apply the available security update.
Conclusion
The integer overflow vulnerability in apng2gif can be addressed by upgrading to version 1.5-1+deb7u1 or later. This security update resolves the issue and prevents potential denial of service attacks. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for apng2gif →
FAQ
The vulnerability in apng2gif allows a remote attacker to crash the application by exploiting an integer overflow. It does not enable arbitrary code execution or privilege escalation.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package manifest file, such as package-lock.json, and Vulert will provide real-time alerts for open-source vulnerabilities.
While the vulnerability has been identified, there is no known exploit publicly available at this time. However, it is crucial to apply the recommended security update to mitigate the risk.
The vulnerability specifically affects the apng2gif package in the Debian 7 Wheezy ecosystem. Other packages are not impacted by this particular issue.
You can find further information about Debian LTS security advisories, including how to apply updates and frequently asked questions, at https://wiki.debian.org/LTS.
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