CVE-2025-30743: Oracle Lease Management Auth Bypass Flaw

CVE-2025-30743 Overview

CVE-2025-30743 is an authorization flaw in the Oracle Lease and Finance Management product, part of Oracle E-Business Suite. The flaw resides in the Internal Operations component and affects version 12.2.13. A low-privileged attacker with network access via HTTP can compromise the application without user interaction. Successful exploitation grants unauthorized read, create, modify, and delete access to data accessible through Oracle Lease and Finance Management. The weakness is categorized as [CWE-863] Incorrect Authorization.

Critical Impact
Authenticated attackers can exfiltrate or manipulate all data accessible to Oracle Lease and Finance Management over the network.

Affected Products

Oracle Lease and Finance Management 12.2.13
Oracle E-Business Suite (Internal Operations component)
Deployments exposing the affected module to HTTP clients

Discovery Timeline

2025-07-15 - Oracle publishes the July 2025 Critical Patch Update addressing CVE-2025-30743
2025-07-15 - CVE-2025-30743 published to NVD
2025-07-29 - Last updated in NVD database

Technical Details for CVE-2025-30743

Vulnerability Analysis

The vulnerability allows a low-privileged user authenticated to Oracle E-Business Suite to bypass authorization checks within the Lease and Finance Management module. An attacker reaches the affected functionality over HTTP without user interaction. Successful exploitation results in full read and write access to data exposed by the module. The scope is unchanged, meaning the impact is confined to the vulnerable component, but availability is not affected.

The EPSS probability for CVE-2025-30743 is approximately 0.397%, placing it in the 60th percentile of likely-to-be-exploited vulnerabilities.

Root Cause

The weakness maps to [CWE-863] Incorrect Authorization. The Internal Operations component does not correctly enforce permission checks on requests handled by the Lease and Finance Management application. Server-side authorization logic relies on assumptions about session or request context that an authenticated user can manipulate. As a result, low-privileged accounts gain access to operations reserved for higher-privileged roles.

Attack Vector

The attack vector is network-based. An attacker authenticates with low privileges to the Oracle E-Business Suite instance and issues crafted HTTP requests to endpoints exposed by Lease and Finance Management. Because the flaw does not require user interaction or elevated privileges, it is suitable for use by insiders, compromised low-tier accounts, or attackers who obtain credentials through phishing or credential stuffing. Oracle has not published detailed exploitation specifics. Refer to the Oracle Critical Patch Update - July 2025 advisory for vendor-supplied technical context.

Detection Methods for CVE-2025-30743

Indicators of Compromise

Unexpected HTTP requests to Lease and Finance Management endpoints from accounts that do not normally use the module
Audit log entries showing data reads or modifications outside a user's assigned responsibility set
Spikes in record creation, deletion, or update events tied to low-privileged session identifiers
Access to Internal Operations functionality from non-administrative roles

Detection Strategies

Enable Oracle E-Business Suite Sign-On Audit and Page Access Tracking to capture user-to-page mappings
Correlate FND_LOG_MESSAGES and HTTP access logs to identify privilege boundary violations
Establish baselines of legitimate user activity per responsibility and alert on deviations
Hunt for repeated 200 OK responses to URLs that should return 403 for the requesting role

Monitoring Recommendations

Forward Oracle E-Business Suite application, database, and web tier logs to a centralized SIEM
Monitor changes to lease contracts, financial records, and configuration tables for anomalous authorship
Alert on session activity originating from low-privileged accounts targeting Internal Operations URIs
Review service account usage against documented business workflows on a weekly cadence

How to Mitigate CVE-2025-30743

Immediate Actions Required

Apply the Oracle July 2025 Critical Patch Update to all affected Oracle E-Business Suite environments
Inventory all Oracle Lease and Finance Management 12.2.13 installations and verify patch status
Restrict network exposure of the E-Business Suite middle tier to trusted networks and VPN users
Review and reduce role assignments granting access to Lease and Finance Management responsibilities

Patch Information

Oracle addressed CVE-2025-30743 in the July 2025 Critical Patch Update released on 2025-07-15. Administrators must download and apply the fix referenced in the Oracle Critical Patch Update Advisory - July 2025. Oracle does not support partial mitigations in place of patching, and the vendor advisory should be consulted for the specific patch number applicable to each E-Business Suite deployment.

Workarounds

No official vendor workaround is documented; patching is the required remediation
Temporarily revoke Lease and Finance Management responsibilities from non-essential users until patching completes
Place a web application firewall in front of the E-Business Suite middle tier and block direct access to Internal Operations URIs from untrusted sources
Enforce multi-factor authentication on all Oracle E-Business Suite accounts to reduce risk from credential theft

bash

# Verify the Oracle E-Business Suite patch level after applying CPU July 2025
sqlplus apps/<password> <<EOF
SELECT bug_number, last_update_date
  FROM ad_bugs
 WHERE bug_number IN ('<CPU_JUL_2025_PATCH_ID>')
 ORDER BY last_update_date DESC;
EOF