CVE-2022-34792
📋 TL;DR
This CSRF vulnerability in Jenkins Recipe Plugin allows attackers to trick authenticated users into making unintended HTTP requests to attacker-controlled URLs and parse the responses as XML. It affects Jenkins instances with Recipe Plugin 1.2 or earlier installed. Attackers could potentially access sensitive data or perform actions on behalf of authenticated users.
💻 Affected Systems
- Jenkins Recipe Plugin
📦 What is this software?
Recipe by Jenkins
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal sensitive data from internal systems, perform server-side request forgery (SSRF) attacks, or execute actions on behalf of authenticated Jenkins users with their permissions.
Likely Case
Data exfiltration from internal systems accessible to the Jenkins server, or limited impact depending on network segmentation and user permissions.
If Mitigated
Minimal impact if proper CSRF protections, network segmentation, and least-privilege principles are implemented.
🎯 Exploit Status
Exploitation requires tricking authenticated users into visiting malicious pages. No authentication bypass needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Recipe Plugin 1.3 or later
Vendor Advisory: https://www.jenkins.io/security/advisory/2022-06-30/#SECURITY-2000
Restart Required: Yes
Instructions:
1. Update Jenkins Recipe Plugin to version 1.3 or later via Jenkins Plugin Manager. 2. Restart Jenkins service after update. 3. Verify plugin version in Installed Plugins list.
🔧 Temporary Workarounds
Disable Recipe Plugin
allTemporarily disable the vulnerable plugin until patching is possible
Navigate to Jenkins > Manage Jenkins > Manage Plugins > Installed tab > Find Recipe Plugin > Disable
Implement CSRF Protection
allEnable Jenkins built-in CSRF protection (Crumb Issuer)
Navigate to Jenkins > Manage Jenkins > Configure Global Security > Enable 'Prevent Cross Site Request Forgery exploits'
🧯 If You Can't Patch
- Implement strict network segmentation to limit Jenkins server's outbound connections
- Apply principle of least privilege to Jenkins service accounts and user permissions
🔍 How to Verify
Check if Vulnerable:
Check installed Recipe Plugin version in Jenkins > Manage Jenkins > Manage Plugins > Installed tabCheck Version:
curl -s http://jenkins-host/pluginManager/api/json?depth=1 | grep -o '"shortName":"recipe","version":"[^"]*"'Verify Fix Applied:
Verify Recipe Plugin version is 1.3 or higher in Installed Plugins list📡 Detection & Monitoring
Log Indicators:
- Unusual outbound HTTP requests from Jenkins server
- Recipe Plugin XML parsing errors
- CSRF token validation failures
Network Indicators:
- Jenkins server making unexpected HTTP requests to external domains
- XML responses being sent to Jenkins from unusual sources
SIEM Query:
source="jenkins.log" AND ("recipe" OR "CSRF" OR "XML") AND ("error" OR "failed" OR "unauthorized")