CVE-2001-1311 in Lotus Domino R5
Summary
by MITRE
Buffer overflows in Lotus Domino R5 before R5.0.7a 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 • 01/19/2025
The vulnerability identified as CVE-2001-1311 represents a critical buffer overflow flaw affecting IBM Lotus Domino R5 software versions prior to R5.0.7a. This vulnerability exists within the LDAPv3 protocol implementation and demonstrates the severe security implications that can arise from improper input validation in network services. The flaw allows remote attackers to exploit memory corruption issues that can lead to system instability and potential code execution. The vulnerability was specifically demonstrated through the PROTOS LDAPv3 test suite, indicating that the attack vector involves structured network communication protocols that process user-supplied data without adequate bounds checking.
The technical nature of this buffer overflow stems from insufficient validation of input data within the LDAPv3 processing components of the Lotus Domino server. When the server receives malformed or oversized LDAPv3 protocol messages, the application fails to properly manage memory allocation for buffer operations, leading to memory corruption that can cause the application to crash or potentially execute arbitrary code. This type of vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and represents a classic example of unsafe memory handling practices. The flaw operates at the application layer of the network stack, making it particularly dangerous as it can be exploited remotely without requiring local system access or authentication.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable remote code execution, making it a severe threat to enterprise environments that rely on Lotus Domino for email and collaboration services. When exploited successfully, the vulnerability can cause complete system crashes, leading to service disruption and potential data loss. Organizations running affected versions of Lotus Domino face significant risk of unauthorized access and system compromise, particularly in environments where these servers are exposed to untrusted network traffic. The vulnerability's exploitation through LDAPv3 protocol testing indicates that it affects core directory services functionality, potentially allowing attackers to gain elevated privileges or access sensitive corporate data.
Mitigation strategies for this vulnerability require immediate patch deployment to update Lotus Domino servers to R5.0.7a or later versions that contain the necessary security fixes. Network administrators should implement proper firewall rules to restrict LDAPv3 traffic to trusted sources only, reducing the attack surface for this specific vulnerability. Additionally, monitoring systems should be configured to detect anomalous LDAPv3 protocol behavior that might indicate exploitation attempts. The remediation process should include thorough testing of patches in controlled environments before deployment to production systems to ensure that the updates do not introduce compatibility issues with existing applications or services. Organizations should also consider implementing intrusion detection systems that can identify and alert on potential exploitation attempts targeting this specific vulnerability, aligning with ATT&CK technique T1210 for exploiting weaknesses in remote services. Security teams must conduct comprehensive vulnerability assessments to identify all instances of affected Lotus Domino servers within their infrastructure and prioritize remediation efforts based on risk exposure and business criticality.