CVE-2017-11589 in DDR2200
Summary
by MITRE
On Cisco DDR2200 ADSL2+ Residential Gateway DDR2200B-NA-AnnexA-FCC-V00.00.03.45.4E and DDR2201v1 ADSL2+ Residential Gateway DDR2201v1-NA-AnnexA-FCC-V00.00.03.28.3 devices, there is no access control for info.html, wancfg.cmd, rtroutecfg.cmd, arpview.cmd, cpuview.cmd, memoryview.cmd, statswan.cmd, statsatm.cmd, scsrvcntr.cmd, scacccntr.cmd, logview.cmd, voicesipview.cmd, usbview.cmd, wlmacflt.cmd, wlwds.cmd, wlstationlist.cmd, HPNAShow.cmd, HPNAView.cmd, qoscls.cmd, qosqueue.cmd, portmap.cmd, scmacflt.cmd, scinflt.cmd, scoutflt.cmd, certlocal.cmd, or certca.cmd.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 10/31/2019
The vulnerability identified as CVE-2017-11589 affects Cisco DDR2200 and DDR2201 residential gateway devices, representing a critical access control flaw that exposes multiple administrative interfaces without proper authentication mechanisms. This vulnerability resides within the web-based management interface of these devices, where numerous command execution endpoints are accessible to unauthorized users. The affected devices operate with firmware versions that fail to implement proper session management and user authentication controls, creating a pathway for malicious actors to gain access to sensitive system information and configuration parameters. This flaw directly violates security best practices and represents a fundamental failure in the device's security architecture.
The technical implementation of this vulnerability stems from the absence of access control checks on a comprehensive list of administrative command endpoints. These endpoints include critical system interfaces such as info.html, wancfg.cmd, and various network monitoring commands like statswan.cmd and statsatm.cmd. The flaw manifests as a lack of authentication verification before allowing access to these administrative functions, which typically require elevated privileges to execute. This absence of access control mechanisms creates a privilege escalation path where unauthenticated users can potentially execute administrative commands and view sensitive system information. The vulnerability aligns with CWE-285, which addresses improper access control issues, and specifically demonstrates weaknesses in authentication and authorization mechanisms within network appliances.
The operational impact of this vulnerability extends beyond simple information disclosure to encompass full administrative control of affected devices. Attackers who discover these accessible endpoints can perform a wide range of malicious activities including network configuration changes, monitoring of network traffic, modification of security settings, and potential data exfiltration. The exposed interfaces provide access to system statistics, network monitoring data, and configuration parameters that could reveal network topology, device settings, and potentially sensitive communication patterns. This vulnerability enables attackers to establish persistent access points within networks and could facilitate more sophisticated attacks such as man-in-the-middle operations or network reconnaissance. The exposure of these interfaces violates fundamental security principles outlined in the NIST SP 800-53 security controls and represents a significant risk to network integrity and confidentiality.
Organizations should implement immediate mitigations including network segmentation to isolate affected devices from critical network segments, deployment of network access control policies to restrict access to administrative interfaces, and implementation of network monitoring to detect unauthorized access attempts. Device firmware updates should be applied immediately if available, though the vulnerability may require complete device replacement in some cases. Network administrators should consider disabling unnecessary web management interfaces and implementing strong authentication controls for any remaining accessible administrative endpoints. The vulnerability demonstrates the importance of implementing defense-in-depth strategies and proper access control mechanisms as outlined in MITRE ATT&CK framework's privilege escalation techniques, where unauthorized access to administrative interfaces can lead to complete system compromise and persistent network access.