This vulnerability in Apache Camel’s Bean component allows an attacker to bypass header filtering mechanisms under specific conditions. The issue arises when using HTTP servers via Camel components like camel-servlet, camel-jetty, camel-undertow, camel-platform-http, or camel-netty-http, and routing exchanges to a `camel-bean` producer. The vulnerability is triggered if the bean being invoked has more than one method implemented. Attackers can forge Camel header names to invoke unintended methods within the same bean. This occurs due to a flaw in the default filtering mechanism, which only blocks headers starting with “Camel”, “camel”, or “org.apache.camel.”. Mitigation involves removing suspicious headers using Camel’s `removeHeaders` EIP or upgrading to patched versions.
DailyCVE Form:
Platform: Apache Camel
Version: 3.10.0-3.22.3, 4.2.0-4.8.4, 4.9.0-4.10.1
Vulnerability: Bypass/Injection
Severity: Critical
Date: 2023-XX-XX
What Undercode Say:
Exploitation:
1. Attackers craft malicious headers to bypass filtering.
2. Exploit requires a bean with multiple methods.
- Use tools like Burp Suite to manipulate HTTP requests.
Protection:
- Upgrade to Apache Camel 4.10.2, 4.8.5, or 3.22.4.
2. Use `removeHeaders` EIP to filter headers:
from("direct:start")
.removeHeaders("")
.to("bean:myBean");
3. Implement custom header filtering:
from("direct:start")
.filter(header -> !header.startsWith("Camel") && !header.startsWith("camel"))
.to("bean:myBean");
Analytics:
1. Monitor logs for unusual header patterns.
2. Use WAF to block malicious payloads.
3. Regularly audit Camel routes for header handling.
Commands:
1. Check current Camel version:
mvn dependency:tree | grep camel
2. Upgrade Camel version:
<dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-core</artifactId> <version>4.10.2</version> </dependency>
References:
1. Apache Camel Security Advisory: [bash]
2. CVE Details: [bash]
3. Mitre CVE Entry: [bash]
By following these steps, users can mitigate the risk and secure their Apache Camel deployments.
References:
Reported By: https://github.com/advisories/GHSA-2c2h-2855-mf97
Extra Source Hub:
Undercode
