CVE-2007-4360 in Remote Access Card
Summary
by MITRE
Unspecified vulnerability in Dell Remote Access Card 4 (DRAC4) with firmware 1.50 Build 02.16 allows remote attackers to cause a denial of service (SSH daemon crash) via certain network traffic, as demonstrated by an "nmap -O" scan with nmap 4.03, possibly related to a Mocana (Mocanada) SSH vulnerability.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/31/2017
The vulnerability identified as CVE-2007-4360 affects Dell Remote Access Card 4 devices running firmware version 1.50 Build 02.16, representing a critical security flaw that enables remote attackers to execute denial of service attacks against the SSH daemon service. This vulnerability specifically targets the Secure Shell implementation within the DRAC4 management interface, which provides out-of-band remote management capabilities for Dell servers. The issue manifests when the SSH daemon process crashes in response to specially crafted network traffic, effectively disrupting remote management access to affected systems.
The technical exploitation of this vulnerability involves sending malformed network packets that trigger a buffer overflow or memory corruption condition within the Mocana SSH implementation used by DRAC4. This particular implementation is vulnerable to a specific type of attack vector that causes the SSH daemon to terminate unexpectedly, as demonstrated through nmap 4.03 scanning with the -O option that performs operating system fingerprinting. The attack leverages the Mocana SSH library's handling of certain packet structures, particularly those related to protocol negotiation and key exchange mechanisms. The vulnerability classification aligns with CWE-122, which describes buffer overflow conditions in heap-based memory management, and CWE-119, which encompasses memory access violations that can lead to process termination.
The operational impact of this vulnerability extends beyond simple service disruption, as it compromises the availability of critical remote management capabilities that system administrators rely upon for server maintenance, monitoring, and troubleshooting. When the SSH daemon crashes, administrators lose access to the DRAC4 interface, which can prevent them from performing essential tasks such as system configuration changes, firmware updates, or emergency recovery procedures. This creates a significant risk for enterprise environments where remote server management is crucial for maintaining service availability and operational continuity. The vulnerability particularly affects systems where DRAC4 is deployed in production environments without proper network segmentation or alternative access methods, as the denial of service can persist until manual intervention occurs or the device reboots.
Organizations should implement immediate mitigations including network segmentation to isolate DRAC4 interfaces from untrusted networks, deployment of network access control lists to restrict access to the SSH daemon ports, and application of firmware updates that address the underlying Mocana SSH vulnerability. The ATT&CK framework categorizes this vulnerability under T1499.004, which covers network denial of service attacks, and T1566.001, which involves spearphishing through social engineering. Additionally, implementing intrusion detection systems to monitor for suspicious SSH traffic patterns and establishing redundant access methods for critical systems can provide additional layers of defense. Regular vulnerability assessments should include checking for outdated firmware versions and ensuring that all management interfaces are properly secured. The vulnerability also highlights the importance of supply chain security considerations, as it demonstrates how third-party libraries within embedded systems can introduce exploitable conditions that affect enterprise infrastructure.