CVE-2005-4767 in WebLogic Server
Summary
by MITRE
BEA WebLogic Server and WebLogic Express 8.1 SP5 and earlier, and 7.0 SP6 and earlier, when using username/password authentication, does not lock out a username after the maximum number of invalid login attempts, which makes it easier for remote attackers to guess the password.
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Analysis
by VulDB Data Team • 06/26/2025
The vulnerability described in CVE-2005-4767 represents a critical authentication weakness in BEA WebLogic Server and WebLogic Express versions prior to the specified service packs. This flaw specifically impacts systems utilizing username/password authentication mechanisms where the application fails to implement account lockout functionality. The absence of account lockout capabilities creates a significant security risk by allowing attackers to perform unlimited brute force password guessing attempts without encountering account lockout restrictions that would typically prevent such attacks.
From a technical perspective, this vulnerability stems from the improper implementation of authentication controls within the WebLogic server authentication framework. The system lacks the necessary mechanisms to track failed login attempts and automatically disable accounts after reaching a predetermined threshold of invalid credentials. This design flaw allows remote attackers to systematically test numerous password combinations against valid usernames, effectively eliminating the protective barriers that would normally slow down or prevent automated password guessing attacks. The vulnerability directly relates to CWE-307 - Improper Restriction of Excessive Authentication Attempts, which specifically addresses the lack of proper account lockout mechanisms.
The operational impact of this vulnerability is substantial as it dramatically increases the success probability of password guessing attacks against valid user accounts. Attackers can leverage this weakness to conduct prolonged brute force operations without the risk of being automatically locked out, making it significantly easier to compromise user credentials. This vulnerability is particularly dangerous in environments where default or weak passwords are commonly used, as the attack surface expands exponentially. The risk is further amplified when considering that WebLogic servers often serve as critical enterprise application platforms with access to sensitive business data and systems.
Security practitioners should recognize this vulnerability as a clear indication of poor authentication security implementation that violates fundamental security principles. The lack of account lockout functionality creates a persistent attack vector that remains viable for extended periods without detection. This vulnerability aligns with ATT&CK technique T1110 - Brute Force, specifically highlighting the absence of defensive measures that would normally be implemented to counter such attacks. Organizations using affected WebLogic versions should immediately implement mitigations including upgrading to supported versions, implementing account lockout policies, and deploying additional authentication controls such as two-factor authentication or IP-based access restrictions. The vulnerability demonstrates the critical importance of proper authentication design and the necessity of implementing layered security controls to protect against credential guessing attacks.