CVE-2019-3894 : Exploit Details and Defense Strategies
Learn about CVE-2019-3894 affecting Wildfly's Elytron subsystem versions 11 to 16. Find out the impact, technical details, and mitigation steps for this vulnerability.
Wildfly Elytron subsystem versions 11 to 16 are affected by a vulnerability that could allow a shared thread to use an incorrect security identity during execution.
Understanding CVE-2019-3894
In Wildfly's Elytron subsystem versions 11 to 16, a flaw exists in the ElytronManagedThread that could lead to the misuse of security identities by shared threads.
What is CVE-2019-3894?
The vulnerability in Wildfly's Elytron subsystem versions 11 to 16 allows threads to retain security identities incorrectly, potentially leading to the execution of threads with the wrong security context.
The Impact of CVE-2019-3894
The vulnerability could enable a shared thread to utilize an incorrect security identity during execution, potentially leading to unauthorized access or privilege escalation.
Technical Details of CVE-2019-3894
Wildfly's Elytron subsystem versions 11 to 16 are affected by a security vulnerability that could result in the misuse of security identities by shared threads.
Vulnerability Description
The ElytronManagedThread in Wildfly's Elytron subsystem versions 11 to 16 may not end threads correctly, allowing shared threads to execute with the wrong security identity.
Affected Systems and Versions
- Product: Wildfly
- Vendor: Red Hat
- Versions Affected: 11 to 16
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: Low
- User Interaction: None
- CVSS Base Score: 5.4 (Medium)
Mitigation and Prevention
To address CVE-2019-3894, follow these mitigation strategies:
Immediate Steps to Take
- Apply the relevant security patches provided by Red Hat.
- Monitor for any unauthorized access or unusual activities on affected systems.
Long-Term Security Practices
- Regularly update and patch software to prevent known vulnerabilities.
- Implement strong access controls and authentication mechanisms to restrict unauthorized access.
Patching and Updates
- Red Hat has released security advisories (RHSA-2019:1107, RHSA-2019:1108, RHSA-2019:1106, RHSA-2019:1140) addressing CVE-2019-3894.