CVE-2001-1308 in iPlanet Directory Server
Summary
by MITRE
Format string vulnerabilities in iPlanet Directory Server 4.1.4 and earlier (LDAP) allow remote attackers to cause a denial of service (crash) and possibly execute arbitrary code, as demonstrated by the PROTOS LDAPv3 test suite.
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Analysis
by VulDB Data Team • 04/08/2019
The vulnerability identified as CVE-2001-1308 represents a critical format string flaw within the iPlanet Directory Server version 4.1.4 and earlier implementations. This issue specifically affects the Lightweight Directory Access Protocol LDAP functionality, which serves as a fundamental component for directory services and authentication in enterprise environments. The vulnerability stems from improper input validation within the server's LDAP processing mechanisms, where user-supplied data is directly incorporated into format strings without adequate sanitization or bounds checking.
The technical nature of this vulnerability aligns with CWE-134, which specifically addresses format string vulnerabilities where format specifiers are constructed from user-controlled data. When the LDAP server processes malformed requests containing crafted format specifiers, it fails to properly validate these inputs, leading to potential stack corruption and arbitrary code execution. The PROTOS LDAPv3 test suite demonstrates how attackers can exploit this weakness by sending specially crafted LDAP requests that trigger the vulnerable code paths within the directory server's implementation.
From an operational impact perspective, this vulnerability creates significant risk for organizations relying on iPlanet Directory Server for critical directory services and authentication infrastructure. Remote attackers can leverage this flaw to cause system crashes, resulting in denial of service conditions that disrupt legitimate user access to directory services and potentially impact downstream applications that depend on successful directory lookups. The potential for arbitrary code execution amplifies the threat landscape, as successful exploitation could allow attackers to gain unauthorized access to the directory server and potentially escalate privileges within the network environment.
The attack surface for this vulnerability extends across enterprise networks where iPlanet Directory Server implementations are deployed, particularly in environments utilizing LDAP for user authentication, authorization, and directory services. Organizations using older versions of this software face heightened risk, as the vulnerability exists in the core LDAP processing functionality that handles all directory access requests. The remote nature of the attack vector means that adversaries can exploit this weakness from outside the network perimeter without requiring local access or prior authentication credentials.
Mitigation strategies for CVE-2001-1308 should prioritize immediate patching of affected iPlanet Directory Server installations to the latest available versions that address the format string vulnerability. Network segmentation and access controls should be implemented to limit exposure of directory services to untrusted networks, while monitoring systems should be deployed to detect suspicious LDAP traffic patterns that may indicate exploitation attempts. Additionally, organizations should consider implementing intrusion detection systems with signatures specifically targeting LDAP protocol anomalies and ensure comprehensive logging of directory service activities for forensic analysis purposes. The vulnerability's classification under ATT&CK technique T1212 emphasizes the importance of protecting directory services from remote exploitation, making this a critical priority for enterprise security teams.