CVE-2017-17146 in DP300
Summary
by MITRE
Huawei DP300 V500R002C00 have a buffer overflow vulnerability due to the lack of validation. An authenticated local attacker can craft specific XML files to the affected products and parse this file, which result in DoS attacks or remote code execution on the device.
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Analysis
by VulDB Data Team • 02/17/2023
The vulnerability identified as CVE-2017-17146 affects Huawei DP300 V500R002C00 devices and represents a critical buffer overflow flaw that stems from inadequate input validation mechanisms. This vulnerability exists within the XML parsing functionality of the affected Huawei product, creating a significant security risk that can be exploited by authenticated local attackers. The flaw specifically manifests when the system processes malformed XML files that have been crafted by an attacker, leading to potential system compromise through either denial of service or remote code execution capabilities. The vulnerability demonstrates a clear weakness in the software's defensive programming practices and input sanitization protocols.
The technical implementation of this buffer overflow vulnerability falls under the CWE-121 category of stack-based buffer overflow conditions, where insufficient bounds checking allows an attacker to overwrite adjacent memory locations within the application's stack space. When an authenticated user crafts and uploads a specially formatted XML file, the parsing routine fails to validate the input length and structure properly, enabling the attacker to exceed the allocated buffer space. This condition creates opportunities for memory corruption that can be leveraged to execute arbitrary code or cause system instability. The vulnerability's exploitation requires local authentication, but once achieved, it provides an attacker with significant control over the device's operational state and potentially allows for privilege escalation within the system's security boundaries.
The operational impact of this vulnerability extends beyond simple system availability concerns, as it creates a pathway for persistent compromise of the affected network infrastructure. Attackers can leverage the buffer overflow to execute code remotely on the device, potentially gaining unauthorized access to sensitive network resources and compromising the integrity of the entire network segment. The denial of service aspect of this vulnerability can result in service disruption that affects legitimate users and network operations, while the remote code execution capability enables attackers to establish persistent backdoors, exfiltrate data, or deploy additional malicious payloads. This vulnerability particularly affects enterprise network infrastructure where Huawei DP300 devices are deployed as core network components, making the potential impact on organizational security substantial.
Mitigation strategies for CVE-2017-17146 should focus on immediate software patching and configuration hardening measures to prevent exploitation. Huawei has released security updates that address the buffer overflow vulnerability through proper input validation and bounds checking mechanisms. Organizations should prioritize applying these patches to all affected devices and implement network segmentation to limit the potential impact of successful exploitation attempts. Additionally, implementing strict access controls and monitoring for unusual XML file uploads can help detect potential exploitation attempts. The vulnerability's characteristics align with ATT&CK technique T1059.007 for command and scripting interpreter and T1499.004 for network denial of service, making it a critical target for defensive security measures. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other network infrastructure components that may present analogous attack surfaces.