CVE-2020-15768 : Security Advisory and Response

Gradle Enterprise and Gradle Enterprise Build Cache Node versions 2017.3 to 2020.2.4 and 1.0 to 9.2 are affected by an unrestricted HTTP header reflection vulnerability. Attackers can exploit this to obtain authentication cookies, potentially leading to user impersonation.

Understanding CVE-2020-15768

This CVE identifies a security flaw in Gradle Enterprise and Gradle Enterprise Build Cache Node that could compromise user authentication.

What is CVE-2020-15768?

The vulnerability in Gradle Enterprise allows remote attackers to access authentication cookies by exploiting an HTTP header reflection issue, potentially enabling impersonation of users.

The Impact of CVE-2020-15768

The vulnerability poses a risk of unauthorized access and potential impersonation of users, compromising the security and integrity of the affected systems.

Technical Details of CVE-2020-15768

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw in Gradle Enterprise versions 2017.3 - 2020.2.4 and Gradle Enterprise Build Cache Node versions 1.0 - 9.2 allows attackers to retrieve authentication cookies through HTTP header reflection.

Affected Systems and Versions

Gradle Enterprise versions 2017.3 - 2020.2.4
Gradle Enterprise Build Cache Node versions 1.0 - 9.2

Exploitation Mechanism

Attackers can exploit a separate XSS vulnerability to access authentication cookies via unrestricted HTTP header reflection, potentially enabling user impersonation.

Mitigation and Prevention

Protecting systems from CVE-2020-15768 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Gradle Enterprise and Gradle Enterprise Build Cache Node to the latest patched versions.
Monitor and restrict access to sensitive information and cookies.

Long-Term Security Practices

Conduct regular security assessments and audits to identify and address vulnerabilities.
Implement secure coding practices to prevent XSS and other common web vulnerabilities.

Patching and Updates

Apply security patches provided by Gradle for the affected versions to mitigate the vulnerability.