CVE-2025-29033
📋 TL;DR
This vulnerability in BambooHR Build allows remote attackers to perform privilege escalation through an open redirect in the SAML authentication endpoint. Attackers can manipulate the redirect parameter to gain unauthorized access to higher-privileged accounts. Organizations using the affected BambooHR Build version are at risk.
💻 Affected Systems
- BambooHR Build
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full administrative takeover of the BambooHR system, allowing access to sensitive HR data, payroll information, and employee records.
Likely Case
Unauthorized access to employee or manager-level accounts, leading to data exposure and potential manipulation of HR records.
If Mitigated
Limited impact with proper access controls, but still potential for information disclosure through redirect manipulation.
🎯 Exploit Status
The GitHub reference contains technical details and proof-of-concept information. Exploitation requires only HTTP GET requests to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
1. Contact BambooHR support for patch availability. 2. Monitor official BambooHR security advisories. 3. Apply any available updates immediately.
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock or sanitize requests to /saml/index.php with suspicious redirect parameters
WAF specific - configure rule to block: ^/saml/index\.php\?r=.*
Access Control Restriction
linuxRestrict access to the SAML endpoint to trusted IP addresses only
iptables -A INPUT -p tcp --dport 80 -s TRUSTED_IP -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s TRUSTED_IP -j ACCEPT
🧯 If You Can't Patch
- Implement strict input validation on all redirect parameters in the application
- Deploy network segmentation to isolate the BambooHR system from untrusted networks
🔍 How to Verify
Check if Vulnerable:
Test by accessing https://[bamboohr-instance]/saml/index.php?r=http://malicious-site.com and checking if redirect occurs without validationCheck Version:
Check BambooHR Build version in admin interface or application configuration filesVerify Fix Applied:
Verify that redirects only occur to trusted, whitelisted domains and include proper validation📡 Detection & Monitoring
Log Indicators:
- HTTP GET requests to /saml/index.php with external URLs in r parameter
- Unusual authentication patterns from SAML endpoint
Network Indicators:
- Redirects from SAML endpoint to unexpected external domains
- Increased traffic to /saml/index.php endpoint
SIEM Query:
source="web_logs" AND uri_path="/saml/index.php" AND query_string="*r=*" AND NOT query_string="*r=trusted-domain*"