CVE-2017-17302 in DP300
Summary
by MITRE
Huawei DP300 V500R002C00, RP200 V600R006C00, TE30 V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C10, V500R002C00, V600R006C00 have a memory leak vulnerability. An authenticated, local attacker may craft and load some specific Certificate Revocation List(CRL) configuration files to the devices repeatedly. Due to not release allocated memory properly, successful exploit may result in memory leak and services abnormal.
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Analysis
by VulDB Data Team • 02/08/2023
This vulnerability affects multiple Huawei video conferencing devices including DP300, RP200, TE30, TE40, TE50, and TE60 across various firmware versions. The memory leak occurs when specific Certificate Revocation List CRL configuration files are repeatedly loaded onto the devices by authenticated local attackers. The flaw resides in the improper memory management within the device's certificate handling mechanisms, where allocated memory is not properly released after processing CRL files. This represents a classic memory leak vulnerability categorized under CWE-401, which specifically addresses memory leaks in software systems. The vulnerability demonstrates characteristics consistent with the attack pattern described in ATT&CK technique T1059.007 for command and scripting interpreter usage, as attackers could leverage this weakness to gradually exhaust system resources through repeated memory allocation without corresponding deallocation.
The operational impact of this vulnerability extends beyond simple resource exhaustion, creating potential service degradation and system instability. When an authenticated attacker repeatedly loads malicious CRL configuration files, each successful load consumes additional memory without proper cleanup, leading to progressive memory consumption that can eventually cause device services to become unresponsive or crash entirely. This memory leak scenario can be particularly dangerous in enterprise environments where video conferencing systems are critical infrastructure components, as it could result in unplanned service interruptions during important meetings or communications. The vulnerability affects both the device's certificate validation processes and its overall system stability, making it a significant concern for organizations relying on these Huawei conferencing solutions for business continuity.
Mitigation strategies should focus on implementing proper memory management practices and establishing monitoring protocols for system resource utilization. Organizations should apply the latest firmware updates provided by Huawei to address this vulnerability, as the company typically releases patches that correct memory handling issues in their affected products. Network administrators should monitor device memory usage patterns and establish alerting mechanisms to detect unusual memory consumption that could indicate exploitation attempts. Additionally, implementing access controls to limit local administrative privileges and restricting the ability to load configuration files to authorized personnel only can help reduce the attack surface. The vulnerability highlights the importance of proper resource management in embedded systems and emphasizes the need for robust memory deallocation practices in certificate handling components, aligning with security best practices outlined in ISO/IEC 27001 and NIST SP 800-53 security frameworks. Regular security assessments and vulnerability scanning should include memory leak detection to prevent similar issues from persisting in production environments.