Buffer Overflow in nginx - nginx security update
Summary
DSA-2721-1: nginx - nginx security update. Affects nginx versions < 1.2.1-2.2+wheezy1. Fixed in 1.2.1-2.2+wheezy1. How to fix ↓
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Background
nginx is a small, powerful, and scalable web/proxy server. It is widely used to serve static content, reverse proxy, and load balance HTTP traffic. The vulnerability affects nginx when processing certain chunked transfer encoding requests if proxy_pass to untrusted upstream HTTP servers is used.
Vulnerability Detail
A buffer overflow vulnerability has been identified in nginx. This flaw allows an attacker to exploit the server by sending specially crafted chunked transfer encoding requests. The impact of this vulnerability includes denial of service attacks, disclosure of worker process memory, and potential execution of arbitrary code.
How To Fix
Minimum fixed version
1.2.1-2.2+wheezy1
This is the first release that contains the fix.
sudo apt-get install --only-upgrade nginxTip — 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.
Conclusion
In conclusion, a buffer overflow vulnerability has been identified in nginx. It is crucial to upgrade your nginx packages to the fixed versions to mitigate the risk of exploitation. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for nginx →
FAQ
nginx is a web/proxy server known for its small footprint, high performance, and scalability.
A buffer overflow vulnerability occurs when a program writes more data into a buffer than it can handle, leading to memory corruption and potential exploitation.
An attacker can exploit this vulnerability by sending specially crafted chunked transfer encoding requests to the nginx server.
The consequences of this vulnerability include denial of service attacks, disclosure of worker process memory, and possible execution of arbitrary code.
To protect your system, it is recommended to upgrade your nginx packages to the fixed versions mentioned.
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