SB2021122210 - Opencast update for Apache Log4j

Description

This security bulletin contains information about 1 security vulnerability.

1) Code Injection (CVE-ID: CVE-2021-45046)

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to incomplete patch in Apache Log4j 2.15.0 for a code injection vulnerability #VU58816 (CVE-2021-44228) in certain non-default configurations. A remote attacker with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) can pass malicious data using a JNDI Lookup pattern and perform a denial of service (DoS) attack, exfiltrate data or execute arbitrary code.

Later discovery demonstrates a remote code execution on macOS but no other tested environments.

Remediation

Install update from vendor's website.

References

• https://github.com/opencast/opencast/releases/tag/9.11"
• https://github.com/opencast/opencast/releases/tag/9.11</a></p><p><a
• https://github.com/opencast/opencast/releases/tag/11.1"
• https://github.com/opencast/opencast/releases/tag/11.1</a></p><p>
• https://github.com/opencast/opencast/releases/tag/10.7<br></p>