CVE-2021-28963 : Security Advisory and Response

Shibboleth Service Provider before version 3.2.1 is vulnerable to content injection due to the utilization of attacker-controlled parameters in template generation.

Understanding CVE-2021-28963

This CVE record highlights a security vulnerability in the Shibboleth Service Provider software that may allow threat actors to inject malicious content.

What is CVE-2021-28963?

CVE-2021-28963 concerns a flaw in Shibboleth Service Provider before 3.2.1 that enables content injection by leveraging parameters controlled by an attacker during template generation.

The Impact of CVE-2021-28963

The impact of this vulnerability is significant as it allows threat actors to inject malicious content into the affected systems, potentially leading to various security threats and unauthorized access.

Technical Details of CVE-2021-28963

This section outlines the technical aspects of the CVE for a better understanding of the vulnerability.

Vulnerability Description

The vulnerability in Shibboleth Service Provider before 3.2.1 arises from the insecure usage of attacker-controlled parameters in template generation, facilitating content injection attacks.

Affected Systems and Versions

All versions of Shibboleth Service Provider before 3.2.1 are impacted by this vulnerability, exposing them to the risk of content injection due to the flawed template generation process.

Exploitation Mechanism

Threat actors can exploit CVE-2021-28963 by manipulating specific parameters during template generation, allowing them to insert unauthorized content into the affected systems.

Mitigation and Prevention

To safeguard systems from the risks associated with CVE-2021-28963, it is crucial to implement appropriate mitigation measures and security best practices.

Immediate Steps to Take

Security teams should consider immediate actions such as applying relevant patches, updating the software, and monitoring for any suspicious activities that could indicate exploitation attempts.

Long-Term Security Practices

In the long term, organizations should focus on enhancing security practices, conducting regular security assessments, and educating users about the importance of safe computing practices.

Patching and Updates

Regularly updating Shibboleth Service Provider to the latest version and promptly applying security patches provided by the vendor can help mitigate the risks associated with CVE-2021-28963.