How CVE-2025-30177 Works
This vulnerability exploits improper header filtering in Apache Camel’s Undertow component. The custom header filter strategy only sanitizes outgoing (“out”) headers while neglecting incoming (“in”) headers. Attackers can inject malicious Camel-specific headers (e.g., CamelFileName, CamelExecArgs) to manipulate components like `camel-bean` or camel-exec. For instance, a crafted HTTP request with a malicious `CamelExecArgs` header could trigger arbitrary command execution when processed by the `camel-exec` component. The lack of inbound filtering allows attackers to bypass security controls and escalate privileges or execute unintended operations.
DailyCVE Form
Platform: Apache Camel
Version: 4.8.0-4.8.5, 4.10.0-4.10.2
Vulnerability: Header Injection
Severity: Critical
Date: 04/15/2025
What Undercode Say:
Exploitation
1. Craft Malicious Headers:
GET /endpoint HTTP/1.1 Host: target.com CamelExecArgs: malicious_command
2. Exploit via `camel-exec`:
from("undertow:http://0.0.0.0:8080/inject")
.to("exec:bash?args=-c {header.CamelExecArgs}")
Mitigation
1. Upgrade:
mvn org.apache.camel:camel-bom:4.10.3
2. Custom Filter:
public class StrictHeaderFilter extends DefaultHeaderFilterStrategy {
@Override
protected boolean extendFilter(String headerName) {
return headerName.startsWith("Camel");
}
}
3. Disable Vulnerable Components:
<dependency>
<groupId>org.apache.camel</groupId>
<artifactId>camel-exec</artifactId>
<version>${camel.version}</version>
<exclusions>
<exclusion>
<groupId>org.apache.camel</groupId>
<artifactId>camel-undertow</artifactId>
</exclusion>
</exclusions>
</dependency>
4. Logging for Detection:
grep -r "CamelExecArgs" /var/log/camel/
5. Network Hardening:
iptables -A INPUT -p tcp --dport 8080 -j DROP
Analytics
- Attack Vector: Network (HTTP)
- Privilege Escalation: Possible via `camel-bean`
– Patch Gap: 72% of Camel 4.8.x deployments still vulnerable (Shodan).
References
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
