CVE-2023-26048 : Security Advisory and Response

This CVE record involves the "OutOfMemoryError for large multipart without filename in Eclipse Jetty" vulnerability.

Understanding CVE-2023-26048

This vulnerability affects servlets with multipart support in Eclipse Jetty, leading to potential OutOfMemoryError when handling specific types of requests.

What is CVE-2023-26048?

In affected versions of Eclipse Jetty, servlets that utilize multipart support and interact with certain request parameters can be exploited by an attacker to trigger an OutOfMemoryError condition. This occurs when a client sends a multipart request with a part that includes a name but no filename and contains very large content. The issue can result in the server throwing an OutOfMemoryError, although it may recover after some time.

The Impact of CVE-2023-26048

The impact of this vulnerability is considered medium with a CVSSv3 base score of 5.3. While it may cause service disruption due to memory errors, affected systems can potentially recover from the issue.

Technical Details of CVE-2023-26048

This section provides more insights into the vulnerability, affected systems, and potential exploitation methods.

Vulnerability Description

The vulnerability arises in servlets utilizing multipart support, specifically when handling multipart requests with a part containing a name but no filename and significant content. This can lead to OutOfMemoryError conditions on the server.

Affected Systems and Versions

The vulnerability impacts Eclipse Jetty versions prior to 9.4.51, 10.0.14, and 11.0.14. Systems running these versions are susceptible to the OutOfMemoryError exploit.

Exploitation Mechanism

An attacker can exploit this vulnerability by crafting a multipart request with a part lacking a filename but containing large content. When processed by affected servlets in the specified versions, this can trigger the OutOfMemoryError condition on the server.

Mitigation and Prevention

To address CVE-2023-26048 and enhance system security, specific mitigation and prevention measures are recommended.

Immediate Steps to Take

Users are advised to upgrade their Eclipse Jetty installations to patched versions 9.4.51, 10.0.14, or 11.0.14 to eliminate the vulnerability. Additionally, configuring the multipart parameter

maxRequestSize

to limit multipart content can help mitigate the risk.

Long-Term Security Practices

Implementing secure coding practices, regularly monitoring for vulnerabilities, and staying informed about security updates can enhance the long-term security posture of systems to prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates provided by Eclipse Jetty and other relevant software vendors is crucial to address known vulnerabilities and maintain a secure infrastructure.