CVE-2025-45615: Yaoqishan Auth Bypass Vulnerability

CVE-2025-45615 Overview

CVE-2025-45615 is an Incorrect Access Control vulnerability discovered in the /admin/ API endpoint of yaoqishan v0.0.1-SNAPSHOT. This vulnerability allows unauthenticated attackers to gain administrative privileges by sending crafted requests to the vulnerable endpoint, effectively bypassing authentication and authorization mechanisms entirely.

Critical Impact

Attackers can remotely gain full administrative access to affected yaoqishan installations without any authentication, potentially leading to complete system compromise, data theft, and unauthorized modifications.

Affected Products

• user-xiangpeng yaoqishan v0.0.1-SNAPSHOT

Discovery Timeline

• 2025-05-05 - CVE-2025-45615 published to NVD
• 2025-10-17 - Last updated in NVD database

Technical Details for CVE-2025-45615

Vulnerability Analysis

This vulnerability stems from improper access control implementation in the /admin/ API of yaoqishan. The application fails to properly verify user authentication and authorization before granting access to administrative functions. This is classified under CWE-284 (Improper Access Control), which encompasses failures to restrict access to authorized users only.

The network-accessible nature of this vulnerability means that any attacker with network access to the affected application can attempt exploitation. No prior authentication or user interaction is required, making this a highly exploitable vulnerability that poses significant risk to confidentiality, integrity, and availability of the affected system.

Root Cause

The root cause of CVE-2025-45615 lies in missing or improperly implemented access control checks within the /admin/ API endpoint. The application does not adequately verify that requests to administrative functions originate from authenticated and authorized users. This allows attackers to craft requests that bypass whatever minimal security controls may exist, directly accessing administrative functionality that should be restricted.

Attack Vector

The attack vector for this vulnerability is network-based. An attacker can exploit this flaw remotely by sending specially crafted HTTP requests to the /admin/ API endpoint. Since no authentication is required, the attacker does not need valid credentials or prior access to the system.

The exploitation process involves identifying the vulnerable /admin/ API endpoint and constructing requests that mimic legitimate administrative actions. Due to the lack of proper access control, these requests are processed by the application as if they originated from an authenticated administrator.

For additional technical details regarding this vulnerability, refer to the GitHub Issue Discussion.

Detection Methods for CVE-2025-45615

Indicators of Compromise

• Unexpected HTTP requests to /admin/ API endpoints from unauthenticated sources or unknown IP addresses
• Administrative actions logged without corresponding user authentication events
• New administrator accounts or privilege escalations appearing without authorized changes
• Unusual modifications to system configurations or sensitive data

Detection Strategies

• Implement web application firewall (WAF) rules to monitor and alert on suspicious requests to /admin/ endpoints
• Review access logs for requests to administrative endpoints that lack proper authentication tokens or session identifiers
• Deploy intrusion detection systems (IDS) configured to detect access control bypass attempts
• Conduct regular security audits of user permissions and administrative account activities

Monitoring Recommendations

• Enable comprehensive logging for all requests to the /admin/ API and administrative functions
• Set up real-time alerting for authentication failures followed by successful administrative actions
• Monitor for unusual patterns of administrative API usage, especially from external IP addresses
• Implement anomaly detection to identify deviations from normal administrative access patterns

How to Mitigate CVE-2025-45615

Immediate Actions Required

• Restrict network access to the /admin/ API endpoint using firewall rules or network segmentation
• Implement strong authentication mechanisms for all administrative functions immediately
• Review and revoke any unauthorized administrative accounts or privileges that may have been created
• Temporarily disable the affected /admin/ API if the application is not critical to operations

Patch Information

At the time of writing, no official patch has been released by the vendor for CVE-2025-45615. Users should monitor the GitHub Issue Discussion for updates regarding official fixes. Given that the affected version is v0.0.1-SNAPSHOT, this appears to be a development/pre-release version, and users should consider upgrading to a stable release when available.

Workarounds

• Implement network-level access controls (firewall rules) to limit access to the /admin/ endpoint to trusted IP addresses only
• Deploy a reverse proxy or WAF with authentication enforcement for administrative endpoints
• Add application-level authentication middleware to protect the /admin/ API before the official patch is available
• Consider disabling the vulnerable API endpoint entirely if administrative functionality can be managed through alternative means

# Example: Restrict access to /admin/ endpoint using iptables
# Allow only trusted admin IP (replace with your admin IP)
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.100 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s 192.168.1.100 -j ACCEPT
# Drop all other traffic to the application port (adjust as needed)
# Note: This is a network-level workaround; application-level fixes are recommended