CVE-2007-2150 in Titan
Summary
by MITRE
BlueArc-FTPD in BlueArc Titan 2x00 devices with firmware 4.2.944b allows remote attackers to redirect traffic to other sites (aka FTP bounce) via the PORT command, a variant of CVE-1999-0017.
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Analysis
by VulDB Data Team • 08/29/2018
The vulnerability identified as CVE-2007-2150 affects the BlueArc-FTPD service running on BlueArc Titan 2x00 storage devices with firmware version 4.2.944b. This represents a significant security flaw that enables remote attackers to exploit the File Transfer Protocol implementation to redirect network traffic to arbitrary destinations. The issue manifests through the improper handling of the PORT command, which is a standard FTP command used to specify the IP address and port number where the server should connect back to establish data transfers. The vulnerability is classified as a variant of CVE-1999-0017, which established the foundational understanding of FTP bounce attacks that leverage the protocol's inherent design weaknesses.
The technical flaw resides in the FTP daemon's insufficient validation of IP addresses and port numbers provided in the PORT command. When an FTP client sends a PORT command, it specifies the address and port where the server should establish a data connection. In vulnerable implementations, the system fails to properly verify the source address of the PORT command, allowing attackers to specify arbitrary IP addresses that may not correspond to the original client. This creates an opportunity for attackers to redirect traffic through the FTP server to other systems on the network or internet, effectively using the device as a proxy for malicious activities.
The operational impact of this vulnerability extends beyond simple traffic redirection and represents a serious threat to network security and integrity. Attackers can leverage this flaw to conduct various malicious activities including port scanning of internal networks, bypassing firewall restrictions, and potentially establishing covert communication channels. The vulnerability effectively allows attackers to use the BlueArc Titan 2x00 device as an intermediary for network reconnaissance and exploitation attempts. This type of attack can be particularly dangerous in enterprise environments where storage devices often have privileged network access and may be located in critical network segments.
Security professionals should note that this vulnerability aligns with CWE-20, which describes improper input validation, and represents a classic example of how legacy protocols can contain inherent design flaws that persist across implementations. The attack pattern corresponds to techniques documented in the ATT&CK framework under T1071.004 for application layer protocol usage and T1046 for network service scanning. Organizations should consider implementing network segmentation to isolate storage devices from critical network segments, deploying network monitoring solutions to detect unusual traffic patterns, and ensuring that FTP services are properly secured or disabled when not required for business operations. The vulnerability underscores the importance of regularly updating firmware and security patches, as well as conducting thorough security assessments of network infrastructure components that may be vulnerable to legacy protocol weaknesses.