CVE-2023-29013 : Security Advisory and Response
Learn about CVE-2023-29013 impacting Traefik HTTP reverse proxy due to HTTP header parsing vulnerability leading to denial of service. Find mitigation steps and patch details.
A high-severity CVE-2023-29013 has been published, impacting the Traefik HTTP reverse proxy and load balancer due to HTTP header parsing vulnerability.
Understanding CVE-2023-29013
This CVE affects the Traefik software, introducing a denial-of-service risk through uncontrolled allocation of memory when parsing HTTP headers.
What is CVE-2023-29013?
Traefik, a widely-used HTTP reverse proxy and load balancer, is susceptible to a vulnerability that can lead to a denial of service attack by allocating excessive memory during HTTP header parsing.
The Impact of CVE-2023-29013
The CVE can be exploited to cause a denial of service, affecting the availability of Traefik services for users.
Technical Details of CVE-2023-29013
The vulnerability lies in the HTTP header parsing mechanism of Traefik, allowing attackers to trigger uncontrolled resource consumption. Here are the specific details:
Vulnerability Description
Affects Traefik versions lower than 2.9.10 and version 2.10.0-rc1, leading to potential denial-of-service attacks through excessive memory allocation during header parsing.
Affected Systems and Versions
- Vendor: Traefik
- Product: Traefik
- Affected Versions: < 2.9.10, = 2.10.0-rc1
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting malicious HTTP requests that trigger the excessive memory allocation, causing denial of service.
Mitigation and Prevention
To address CVE-2023-29013 and protect systems from potential attacks, specific actions need to be taken:
Immediate Steps to Take
Immediate mitigations include updating Traefik to patched versions and monitoring for any unusual activity that might indicate exploitation.
Long-Term Security Practices
Implementing secure coding practices, regular security assessments, and staying informed about software vulnerabilities are essential for long-term security.
Patching and Updates
Traefik has released patches for versions 2.9.10 and 2.10.0-rc2 to address the vulnerability. Regularly updating the software to the latest secure versions is crucial.