Memory Corruption Vulnerability in Apache2 Package: CVE-2006-20001
Summary
UBUNTU-CVE-2006-20001: A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. Affects apache2 versions 2.4.6-2ubuntu2 – 2.4.7-1ubuntu4.9. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
Apache2 is a widely used open-source web server software that enables the hosting of websites and applications. It is known for its flexibility, performance, and security features. However, like any software, it can be vulnerable to security issues. The vulnerability identified as CVE-2006-20001 affects specific versions of Apache2, allowing for potential memory corruption, which could lead to application crashes and service disruptions.
Vulnerability Detail
The vulnerability arises from a carefully crafted If: request header that can cause a memory read or write of a single zero byte in a pool memory location beyond the header value sent. This could lead to the Apache HTTP Server process crashing, resulting in denial of service. The issue affects Apache HTTP Server versions 2.4.54 and earlier, making it critical for users to address this vulnerability promptly.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
As a temporary workaround, users can implement request filtering to block malicious If: headers. This can be done by configuring the web server to ignore or reject requests containing suspicious headers.
Conclusion
The CVE-2006-20001 vulnerability poses a significant risk to Apache2 users, potentially leading to service disruptions. It is crucial to update to a patched version of the software to mitigate this risk. Users should also consider implementing workarounds until they can perform the necessary updates.
See every vulnerability recorded for apache2 →
FAQ
CVE-2006-20001 is a vulnerability in the Apache2 web server that can lead to memory corruption and potential crashes.
Apache HTTP Server versions 2.4.54 and earlier are affected by this vulnerability.
You can use Vulert, which monitors and alerts for open-source vulnerabilities in real-time. Check your application against this vulnerability using the Vulert playground at Vulert Scanner.
The CVSS score of this vulnerability is 7.5, indicating a high severity level.
If immediate updates are not possible, consider implementing request filtering to block potentially harmful If: headers as a temporary workaround.
Related vulnerabilities
Recent vulnerabilities recorded for apache2.
