CVE-2001-1309 in Secureway Directory
Summary
by MITRE
Buffer overflows in IBM SecureWay 3.2.1 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 • 12/23/2024
The vulnerability identified as CVE-2001-1309 represents a critical buffer overflow flaw discovered in IBM SecureWay 3.2.1 directory services software. This issue manifests within the LDAPv3 protocol implementation and specifically affects the PROTOS LDAPv3 test suite which serves as a comprehensive validation framework for LDAP implementations. The vulnerability stems from inadequate input validation mechanisms that fail to properly handle malformed or excessively long data sequences when processing LDAP requests. The buffer overflow condition occurs when the software attempts to copy user-supplied data into fixed-length memory buffers without proper bounds checking, creating opportunities for attackers to manipulate memory contents and potentially execute arbitrary code.
The technical exploitation of this vulnerability leverages the inherent weaknesses in the LDAP processing logic where the software does not adequately validate the length and content of incoming LDAP messages. When the PROTOS test suite sends specially crafted LDAP requests containing oversized data fields, the vulnerable IBM SecureWay server fails to properly handle these inputs and subsequently overflows the allocated buffer space. This overflow can result in the corruption of adjacent memory locations, potentially allowing attackers to redirect program execution flow and inject malicious code into the running process. The vulnerability operates at the application layer and requires network connectivity to the affected LDAP server, making it remotely exploitable from any location capable of reaching the target system.
The operational impact of this vulnerability extends beyond simple denial of service conditions to encompass potential system compromise and unauthorized code execution. A successful exploitation could allow remote attackers to gain control over the LDAP server, potentially enabling them to access sensitive directory information, modify user accounts, or establish persistent access points within the network infrastructure. The vulnerability particularly affects organizations relying on IBM SecureWay for directory services, as these systems typically serve as critical components in authentication and authorization frameworks, making them attractive targets for adversaries seeking to escalate privileges or gain broader network access. The DoS aspect of this vulnerability can also be leveraged to disrupt legitimate services and create availability issues that may impact business operations.
Organizations should implement immediate mitigations including applying the vendor-provided patches and updates that address the buffer overflow conditions in IBM SecureWay 3.2.1. Network segmentation and access controls should be strengthened to limit exposure of vulnerable LDAP services to untrusted networks. The implementation of intrusion detection systems and network monitoring can help detect anomalous LDAP traffic patterns that may indicate exploitation attempts. Additionally, organizations should conduct thorough vulnerability assessments to identify all instances of affected software and ensure proper input validation mechanisms are in place. This vulnerability aligns with CWE-121 and CWE-122 categories related to buffer overflow conditions and improper input validation, while also mapping to ATT&CK techniques involving remote code execution and privilege escalation through service exploitation. Regular security assessments and patch management processes should be enhanced to prevent similar vulnerabilities from remaining unaddressed in critical infrastructure components.