CVE-2019-10081 Explained : Impact and Mitigation
Learn about CVE-2019-10081, a vulnerability in Apache HTTP Server versions 2.4.20 to 2.4.39 that can lead to memory overwrite in early pushes, potentially causing crashes. Find out how to mitigate and prevent this issue.
CVE-2019-10081 pertains to a vulnerability in Apache HTTP Server versions 2.4.20 to 2.4.39 that can lead to memory overwrite in early pushes, potentially causing crashes.
Understanding CVE-2019-10081
This section provides insights into the nature and impact of the CVE-2019-10081 vulnerability.
What is CVE-2019-10081?
CVE-2019-10081 involves a risk of memory overwrite in early pushes within the HTTP/2 protocol, specifically versions 2.4.20 to 2.4.39 of Apache HTTP Server. The vulnerability arises when using the "H2PushResource" configuration, potentially resulting in crashes. It's crucial to note that the overwritten memory belongs to the configured push link header values, not data provided by the client.
The Impact of CVE-2019-10081
The vulnerability can have the following implications:
- Risk of memory corruption on early pushes
Technical Details of CVE-2019-10081
This section delves into the technical aspects of CVE-2019-10081.
Vulnerability Description
The vulnerability in Apache HTTP Server versions 2.4.20 to 2.4.39 allows for memory overwrite in early pushes, particularly when utilizing the "H2PushResource" configuration. This can lead to crashes due to memory corruption in the pushing request's pool.
Affected Systems and Versions
- Product: Apache HTTP Server
- Versions: 2.4.20 to 2.4.39
Exploitation Mechanism
The vulnerability can be exploited by leveraging the HTTP/2 protocol and configuring "H2PushResource" in the affected versions of Apache HTTP Server.
Mitigation and Prevention
Learn how to address and prevent the CVE-2019-10081 vulnerability.
Immediate Steps to Take
To mitigate the risk associated with CVE-2019-10081, consider the following immediate actions:
- Apply security patches provided by Apache or respective vendors
- Disable the use of "H2PushResource" if not essential
Long-Term Security Practices
For long-term security enhancement, it is recommended to:
- Stay updated on security advisories and patches
- Implement secure coding practices
Patching and Updates
Regularly check for patches and updates from Apache or relevant vendors to address CVE-2019-10081.