CVE-2025-47462: CSRF Privilege Escalation in Ohidul Islam Challan

A high-severity Cross-Site Request Forgery (CSRF) vulnerability (CVE-2025-47462) affecting Ohidul Islam Challan versions up to 3.7.58 was disclosed on May 7, 2025. The flaw enables privilege escalation attacks, posing significant risks to systems running unpatched instances. This article provides technical analysis, mitigation strategies, and contextual data from recent vulnerability trends.

Summary for Security Leadership

The vulnerability allows attackers to escalate privileges by tricking authenticated users into executing unintended actions via forged requests. With a CVSS score of 8.8 (HIGH), it requires immediate attention from administrators. The issue impacts all Challan versions prior to 3.7.58, though exact patch availability remains unspecified at disclosure time.

• CVE ID: CVE-2025-47462
• CVSS: 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
• Affected Versions: Challan ≤ 3.7.58
• Attack Vector: Network-accessible CSRF
• Mitigation: Implement anti-CSRF tokens and upgrade when patches become available

Technical Analysis

The vulnerability stems from insufficient CSRF protections in Challan’s privilege management functions. Attackers can craft malicious HTML forms or scripts that execute privileged actions when visited by authenticated administrators. Unlike standard CSRF flaws, this case enables vertical privilege escalation due to inadequate session validation during critical operations.

While proof-of-concept code hasn’t been publicly released, the attack likely follows standard CSRF patterns:

<form action="http://target/challan/admin/privilege_update" method="POST">
    <input type="hidden" name="user" value="attacker" />
    <input type="hidden" name="level" value="admin" />
</form>
<script>document.forms[0].submit()</script>

This aligns with recent trends in web application vulnerabilities, where CSRF protections are often overlooked during privilege management implementations. The Linux kernel memory corruption flaws (CVE-2025-21962 to CVE-2025-21984) and Microsoft Edge elevation issues (CVE-2025-21399) demonstrate similar oversight patterns in different technical contexts.

Mitigation Strategies

Organizations should implement these immediate countermeasures:

1. Deploy anti-CSRF tokens for all state-changing operations
2. Restrict administrative interfaces to VPN-only access
3. Monitor for suspicious privilege changes using SIEM rules

For detection, teams can implement these Splunk queries:

index=challan_logs (url="/admin/privilege_update" OR url="/admin/role_change") 
| stats count by src_ip, user

The vulnerability’s discovery follows increased scrutiny of privilege escalation vectors, as seen in recent advisories for VMware Aria Operations (CVE-2025-22231) and Windows Disk Cleanup (CVE-2025-21420). These cases collectively highlight the importance of proper access control validation.

Conclusion

CVE-2025-47462 represents a significant risk to Challan deployments until patched. Security teams should prioritize implementing temporary mitigations while monitoring for official updates from the vendor. This case reinforces the need for comprehensive CSRF protections in all authentication-sensitive functions, particularly those involving privilege management.

References

1. “CVE-2025-47462 Detail,” National Vulnerability Database, May 2025. [Online]. Available: https://nvd.nist.gov/vuln/detail/CVE-2025-47462
2. “April 2025 Patch Tuesday,” Microsoft Security Response Center, Apr. 2025. [Online]. Available: https://msrc.microsoft.com/update-guide
3. “Linux Kernel Git Repository,” The Linux Foundation, May 2025. [Online]. Available: https://git.kernel.org
4. “VMSA-2025-0004,” VMware Security Advisories, May 2025. [Online]. Available: https://www.vmware.com/security/advisories/VMSA-2025-0004.html
5. “Windows Disk Cleanup Tool Exploit,” GBHackers, May 2025. [Online]. Available: https://gbhackers.com/windows-disk-cleanup-tool-exploit