eglibc - Stack Clash Vulnerability
Summary
DLA-992-1: eglibc - security update. Affects eglibc versions < 2.13-38+deb7u12. Fixed in 2.13-38+deb7u12. How to fix ↓
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Background
eglibc is the GNU C Library, a key component of the Debian 7 Wheezy operating system. It provides essential functionality for programs written in the C programming language. The library is responsible for handling dynamic linking, memory allocation, and other low-level operations. However, a vulnerability has been discovered in the dynamic linker of eglibc, which can be exploited locally to escalate privileges by clashing the stack.
Vulnerability Detail
The Qualys Research Labs discovered a vulnerability in the dynamic linker of eglibc, known as the Stack Clash vulnerability. This vulnerability allows an attacker with local access to the system to manipulate the stack and potentially execute arbitrary code with elevated privileges. By exploiting this vulnerability, an attacker could gain full control over the affected system and perform unauthorized actions. The full details of this vulnerability can be found in the Qualys advisory at https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt.
How To Fix
Minimum fixed version
2.13-38+deb7u12
This is the first release that contains the fix.
sudo apt-get install --only-upgrade eglibcTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Conclusion
The Stack Clash vulnerability in eglibc poses a significant security risk to systems running Debian 7 Wheezy. It is crucial to promptly upgrade the eglibc packages to version 2.13-38+deb7u12 or later to mitigate the risk of exploitation. For further support and assistance in vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for eglibc →
FAQ
eglibc is the GNU C Library, a crucial component of the Debian 7 Wheezy operating system. It provides essential functionality for programs written in the C programming language.
The Stack Clash vulnerability is a security flaw in the dynamic linker of eglibc. It allows an attacker with local access to the system to manipulate the stack and potentially execute arbitrary code with elevated privileges.
If exploited, this vulnerability could allow an attacker to gain full control over the affected system and perform unauthorized actions. This can lead to data breaches, unauthorized access, and other malicious activities.
To fix this vulnerability, it is recommended to upgrade the eglibc packages to version 2.13-38+deb7u12 or later. Follow the standard package update procedures for Debian 7 Wheezy to ensure the updated packages are installed on all affected systems.
You can find more information about Debian LTS security advisories, including how to apply updates and frequently asked questions, on the Debian Wiki at https://wiki.debian.org/LTS.
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