CVE-2012-0363 in Small Business Srp527w-u
Summary
by MITRE
The web interface on Cisco SRP 520 series devices with firmware before 1.1.26 and SRP 520W-U and 540 series devices with firmware before 1.2.4 allows remote authenticated users to execute arbitrary commands via unspecified vectors, related to a "command injection vulnerability," aka Bug ID CSCtt46871.
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Analysis
by VulDB Data Team • 12/23/2024
The Cisco SRP 520 series security appliances represent a line of network security devices designed to provide secure communication and traffic management capabilities for enterprise environments. These devices operate as unified threat management appliances that combine firewall, intrusion prevention, and other security functions. The vulnerability in question affects specific firmware versions of these appliances, creating a critical security risk that could allow remote authenticated attackers to execute arbitrary commands on the affected systems. This type of vulnerability fundamentally undermines the security posture of the network infrastructure, as it provides an attack vector that bypasses normal authentication mechanisms and allows for complete system compromise.
The technical flaw manifests as a command injection vulnerability that exists within the web interface of these devices. This vulnerability allows an authenticated attacker to inject malicious commands that will be executed with the privileges of the web interface user. The command injection occurs due to insufficient input validation and sanitization within the web application layer of the device. Attackers can leverage this weakness by crafting specially formatted requests that contain command injection payloads, which are then processed by the device's underlying operating system. The vulnerability is classified as a command injection issue under CWE-77, which specifically addresses situations where untrusted data is directly executed as commands by a program. This weakness creates a direct pathway for privilege escalation and system compromise through the web interface.
The operational impact of this vulnerability is severe and far-reaching for organizations relying on these security appliances. An authenticated attacker who gains access to the web interface can execute arbitrary commands with the privileges of the web interface user, potentially leading to complete system compromise. This could result in unauthorized access to network traffic, modification of security policies, data exfiltration, or use of the device as a pivot point for further attacks within the network. The vulnerability affects both the SRP 520 series with firmware versions prior to 1.1.26 and the SRP 520W-U and 540 series with firmware versions prior to 1.2.4, indicating a widespread issue across multiple device variants. Organizations using these devices face significant risk of network infiltration and potential data breaches, as the vulnerability allows for persistent access and control over critical network infrastructure.
Mitigation strategies for this vulnerability require immediate firmware updates to versions that address the command injection flaw. Cisco has released firmware updates that resolve this issue, and organizations should prioritize upgrading their affected devices to the latest stable firmware versions. Network administrators should also implement additional security controls such as restricting web interface access to trusted networks only, implementing strong authentication mechanisms, and monitoring for suspicious activity in web interface logs. The vulnerability aligns with ATT&CK technique T1059.001 for Command and Scripting Interpreter, as it allows attackers to execute commands on the target system. Organizations should also consider implementing network segmentation to limit the potential impact of successful exploitation and establish incident response procedures to detect and respond to potential exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify other potential weaknesses in the network infrastructure that could be exploited in conjunction with this vulnerability.