CVE-2024-27139
📋 TL;DR
This vulnerability in Apache Archiva allows unauthenticated attackers to modify user account data, potentially leading to account takeover. It affects all versions from 2.0.0 onward. Since Apache Archiva is retired and unsupported, no official fix will be released.
💻 Affected Systems
- Apache Archiva
📦 What is this software?
Archiva by Apache
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the Archiva instance with administrative account takeover, leading to repository manipulation, malware injection, or data exfiltration.
Likely Case
Unauthenticated attackers modify user accounts to gain unauthorized access, potentially escalating privileges or disrupting operations.
If Mitigated
Limited impact if instance is isolated and access is restricted to trusted users only.
🎯 Exploit Status
The vulnerability allows unauthenticated exploitation, suggesting relatively straightforward attack vectors.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None
Vendor Advisory: https://lists.apache.org/thread/qr8b7r86p1hkn0dc0q827s981kf1bgd8
Restart Required: No
Instructions:
No official patch available. Apache recommends migrating to alternative software or implementing strict access controls.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to Apache Archiva instances to trusted IP addresses only.
Use firewall rules (e.g., iptables, Windows Firewall) to allow only trusted IPs to access Archiva ports (default 8080/8443).
Authentication Proxy
allPlace Archiva behind a reverse proxy that enforces authentication before requests reach Archiva.
Configure nginx/apache as reverse proxy with authentication (e.g., basic auth, OAuth) in front of Archiva.
🧯 If You Can't Patch
- Migrate to alternative artifact repository software (e.g., Sonatype Nexus, JFrog Artifactory).
- Isolate Archiva instances in a segmented network with strict access controls.
🔍 How to Verify
Check if Vulnerable:
Check if running Apache Archiva version 2.0.0 or later. Review access logs for unauthenticated account modification attempts.Check Version:
Check Archiva web interface or configuration files for version information.Verify Fix Applied:
Verify network restrictions are in place and test that unauthenticated requests to account modification endpoints are blocked.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated POST/PUT requests to user account endpoints
- Unusual account modifications from unexpected IP addresses
Network Indicators:
- Unencrypted traffic to Archiva on default ports (8080/8443) from untrusted sources
SIEM Query:
source="archiva_access.log" AND (uri_path="/restServices/archivaServices/userService" OR uri_path="/security/user") AND http_method IN ("POST", "PUT") AND NOT authenticated_user="*"