CVE-2021-42010 : What You Need to Know

CVE-2021-42010, also known as CRLF log injection, affects Apache Heron versions <= 0.20.4-incubating. The vulnerability allows CRLF log injection due to the lack of proper escaping in log statements. Users are advised to update to version 0.20.5-incubating to mitigate the issue.

Understanding CVE-2021-42010

CVE-2021-42010 addresses the CRLF log injection vulnerability in Apache Heron (Incubating) versions.

What is CVE-2021-42010?

CVE-2021-42010 is a vulnerability that enables CRLF log injection in Apache Heron versions <= 0.20.4-incubating due to inadequate escaping in log statements.

The Impact of CVE-2021-42010

The vulnerability could allow attackers to manipulate log files, potentially leading to malicious activities or tampering with log data.

Technical Details of CVE-2021-42010

CVE-2021-42010 technical specifics.

Vulnerability Description

Heron versions <= 0.20.4-incubating are susceptible to CRLF log injection, as log statements lack proper escaping.

Affected Systems and Versions

Vendor: Apache Software Foundation
Product: Apache Heron (Incubating)
Vulnerable Version: Apache Heron 0.20.4-incubating

Exploitation Mechanism

The vulnerability can be exploited by inserting CRLF sequences into log statements, potentially altering the log file content.

Mitigation and Prevention

Actions to mitigate the CVE-2021-42010 vulnerability.

Immediate Steps to Take

Update Apache Heron to version 0.20.5-incubating to patch the vulnerability
Monitor log files for any suspicious activity
Implement proper input validation and output encoding

Long-Term Security Practices

Regularly update software to the latest versions
Conduct security audits and code reviews to identify similar vulnerabilities
Educate developers on secure coding practices

Patching and Updates

Ensure timely patching of software and apply security updates as soon as they are available.