CVE-2001-1075 in Cobalt RaQ
Summary
by MITRE
poprelayd script before 2.0 in Cobalt RaQ3 servers allows remote attackers to bypass authentication for relaying by causing a "POP login by user" string that includes the attacker s IP address to be injected into the maillog log file.
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Analysis
by VulDB Data Team • 11/22/2024
The vulnerability identified as CVE-2001-1075 affects the poprelayd script component of Cobalt RaQ3 servers prior to version 2.0, representing a significant authentication bypass flaw that could enable remote attackers to gain unauthorized access to email relay services. This issue stems from inadequate input validation and log file manipulation capabilities within the server's mail handling infrastructure, creating a pathway for malicious actors to exploit the system's trust mechanisms.
The technical flaw manifests through a specific vulnerability in how the poprelayd script processes user authentication requests and logs these interactions. When a remote attacker crafts a malicious POP login request, the script fails to properly sanitize the user input before incorporating it into the maillog file. This injection vulnerability allows the attacker's IP address to be embedded within the log entry that typically records legitimate user authentication attempts. The compromised log file subsequently becomes a vector for bypassing authentication mechanisms, as the system may interpret the injected IP address as a valid authentication source, effectively granting unauthorized access to the email relay functionality.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables attackers to potentially intercept, modify, or relay email communications through the compromised server. This authentication bypass can facilitate various malicious activities including email spoofing, spam relay, data exfiltration, and further network reconnaissance. The vulnerability is particularly concerning because it operates at the relay level where email traffic is processed, potentially allowing attackers to establish persistent access points for ongoing malicious activities while remaining undetected by standard monitoring systems that rely on legitimate log entries for security analysis.
Security professionals should recognize this issue as a classic example of insecure input handling and log injection vulnerabilities, which aligns with CWE-77 and CWE-78 categories related to command injection and input validation failures. The attack vector operates through the standard POP protocol communication channels, making it accessible to any remote attacker with network connectivity to the target server. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and privilege escalation through log manipulation and authentication bypass methods.
Mitigation strategies should prioritize immediate patching of the affected Cobalt RaQ3 servers to version 2.0 or later, which includes proper input sanitization and log file validation mechanisms. Network administrators should implement additional security controls including strict access controls on maillog files, regular log file integrity monitoring, and network segmentation to limit the potential impact of such compromises. Organizations should also consider implementing intrusion detection systems capable of identifying anomalous log file entries and establishing comprehensive monitoring protocols for authentication-related activities. The vulnerability demonstrates the critical importance of proper input validation in server-side applications and highlights the need for robust logging practices that prevent malicious actors from exploiting log file processing mechanisms for unauthorized access.