CVE-2020-16255 : What You Need to Know

ownCloud (Core) before 10.5 allows XSS in the login page 'forgot password.'

Understanding CVE-2020-16255

ownCloud (Core) before version 10.5 is vulnerable to a cross-site scripting (XSS) attack in the 'forgot password' functionality.

What is CVE-2020-16255?

This CVE describes a security vulnerability in ownCloud (Core) that enables an attacker to execute malicious scripts in the context of a user's session on the login page.

The Impact of CVE-2020-16255

The XSS vulnerability in the 'forgot password' feature could be exploited by an attacker to steal sensitive information, perform actions on behalf of users, or deface the login page.

Technical Details of CVE-2020-16255

ownCloud (Core) before 10.5 is susceptible to XSS attacks due to inadequate input validation in the 'forgot password' functionality.

Vulnerability Description

The vulnerability allows an attacker to inject and execute arbitrary scripts in the login page, potentially compromising user accounts and data.

Affected Systems and Versions

Product: ownCloud (Core)
Versions: Before 10.5

Exploitation Mechanism

The attacker can craft a malicious link or input that, when interacted with by a user with a session on the login page, executes the injected script.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risk posed by CVE-2020-16255.

Immediate Steps to Take

Upgrade ownCloud (Core) to version 10.5 or newer to patch the XSS vulnerability.
Educate users about the risks of interacting with untrusted links or inputs.

Long-Term Security Practices

Implement regular security assessments and code reviews to identify and address vulnerabilities.
Stay informed about security advisories and updates from ownCloud.

Patching and Updates

Apply security patches promptly to ensure that known vulnerabilities are addressed and mitigated.