icu - Heap-based Buffer Overflow Vulnerability
Summary
DLA-947-1: icu - security update. Affects icu versions < 4.8.1.1-12+deb7u7. Fixed in 4.8.1.1-12+deb7u7. How to fix ↓
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Background
icu is the International Components for Unicode library, which provides robust and full-featured Unicode support. It is widely used in various applications and programming languages to handle Unicode characters, strings, and text processing. However, a vulnerability has been discovered in icu that allows an attacker to trigger a heap-based buffer overflow, leading to a denial of service or potential execution of arbitrary code.
Vulnerability Detail
The vulnerability in icu arises from a lack of proper input validation. By exploiting this issue, an attacker can cause an out-of-bound write through a heap-based buffer overflow. This can result in a crash of the affected application or even allow the execution of arbitrary code. The consequences of this vulnerability can range from service disruption to a complete compromise of the system.
How To Fix
Minimum fixed version
4.8.1.1-12+deb7u7
This is the first release that contains the fix.
sudo apt-get install --only-upgrade icuTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no specific workaround available for this vulnerability. It is crucial to apply the recommended fix by upgrading the icu package to the patched version.
Conclusion
The icu library is vulnerable to a heap-based buffer overflow, which can lead to a denial of service or potential execution of arbitrary code. It is crucial to upgrade the icu package to the patched version (4.8.1.1-12+deb7u7 or later) to mitigate this vulnerability. For further support and assistance in vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for icu →
FAQ
icu is the International Components for Unicode library, which provides Unicode support for various applications and programming languages.
A heap-based buffer overflow occurs when a program writes data beyond the allocated memory buffer in the heap, potentially overwriting important data or executing arbitrary code.
The consequences of this vulnerability can range from crashing the affected application to allowing an attacker to execute arbitrary code, potentially leading to a complete compromise of the system.
You can use the Vulert Playground (https://vulert.com/scanner) to check if your application is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) to the playground, and it will provide real-time alerts for open-source vulnerabilities, including this one.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, on the Debian Wiki: https://wiki.debian.org/LTS
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