CVE-2020-27813 : Security Advisory and Response
Understand the impact of CVE-2020-27813, an integer overflow vulnerability affecting websocket frames. Learn about affected systems, exploitation, and mitigation steps.
CVE-2020-27813 is an integer overflow vulnerability related to the length of websocket frames received via a websocket connection. This vulnerability could be exploited by an attacker to launch a denial of service attack on an HTTP Server that allows websocket connections.
Understanding CVE-2020-27813
This section provides insights into the nature and impact of the CVE-2020-27813 vulnerability.
What is CVE-2020-27813?
The CVE-2020-27813 vulnerability involves an integer overflow issue associated with the length of websocket frames received through a websocket connection. Attackers could leverage this flaw to execute denial of service attacks on an HTTP Server that permits websocket connections.
The Impact of CVE-2020-27813
The vulnerability poses a significant risk as it allows malicious actors to disrupt the normal operation of HTTP Servers by exploiting websocket connections.
Technical Details of CVE-2020-27813
This section delves into the technical aspects of CVE-2020-27813.
Vulnerability Description
The vulnerability stems from an integer overflow in the handling of websocket frame lengths, enabling attackers to disrupt HTTP Server operations.
Affected Systems and Versions
- Vendor: n/a
- Affected Product: golang-github-gorilla-websocket
- Affected Version: github.com/gorilla/websocket v1.4.1
Exploitation Mechanism
Attackers can exploit the integer overflow vulnerability by manipulating the length of websocket frames received via a websocket connection to trigger denial of service attacks.
Mitigation and Prevention
Learn how to mitigate and prevent the CVE-2020-27813 vulnerability.
Immediate Steps to Take
- Update the affected product to a non-vulnerable version.
- Implement network-level protections to filter out potentially malicious websocket traffic.
Long-Term Security Practices
- Regularly monitor and update software components to address known vulnerabilities.
- Conduct security assessments to identify and remediate potential weaknesses in websocket implementations.
Patching and Updates
Ensure timely application of security patches and updates to the affected product to mitigate the CVE-2020-27813 vulnerability.