REDHAT-BUG-2463177: Low severity Apache MINA vulnerability
Apache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.
The fix checks if the class is present in the accepted class filter before calling Class.forName().
Affected versions are Apache MINA 2.0.0 <= 2.0.27, 2.1.0 <= 2.1.10, and
2.2.0 <= 2.2.5.
The problem is resolved in Apache MINA 2.0.28, 2.1.11, and 2.2.6 by applying the classname allowlist earlier.
Affected are applications using Apache MINA that call IoBuffer.getObject().
Applications using Apache MINA are advised to upgrade.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Apache MINAto a version that resolves this vulnerability.Fixed in 2.0.28 - Upgrade
Upgrade
Apache MINAto a version that resolves this vulnerability.Fixed in 2.1.11 - Upgrade
Upgrade
Apache MINAto a version that resolves this vulnerability.Fixed in 2.2.6
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2463177?
The severity of REDHAT-BUG-2463177 is low.
How do I fix REDHAT-BUG-2463177?
To fix REDHAT-BUG-2463177, ensure to update to the patched version of Apache MINA that includes the class filter check.
What vulnerability does REDHAT-BUG-2463177 address?
REDHAT-BUG-2463177 addresses an arbitrary code execution vulnerability in Apache MINA's AbstractIoBuffer.resolveClass() method.
How does the vulnerability REDHAT-BUG-2463177 impact security?
The vulnerability REDHAT-BUG-2463177 potentially allows attackers to execute arbitrary code, bypassing the classname allowlist.
When was REDHAT-BUG-2463177 published?
REDHAT-BUG-2463177 was published on April 27, 2026.