CVE-2020-8689 in Wireless for Open Source
Summary
by MITRE
Improper buffer restrictions in the Intel(R) Wireless for Open Source before version 1.5 may allow an unauthenticated user to potentially enable denial of service via adjacent access.
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Analysis
by VulDB Data Team • 08/13/2020
The vulnerability identified as CVE-2020-8689 resides within the Intel(R) Wireless for Open Source component, specifically affecting versions prior to 1.5. This issue manifests as improper buffer restrictions that create a potential security weakness exploitable by unauthenticated users. The vulnerability's classification aligns with CWE-129, which addresses insufficient input validation leading to buffer overflows, and represents a critical concern for wireless network security implementations. The affected software component operates within the realm of wireless communication protocols, making it particularly relevant to enterprise and consumer networking environments where wireless access points and controllers are deployed.
The technical flaw stems from inadequate buffer size validation mechanisms within the wireless communication stack. When processing incoming network packets or configuration data, the software fails to properly enforce buffer boundaries, potentially allowing maliciously crafted data to overwrite adjacent memory regions. This improper buffer handling creates opportunities for memory corruption that can be leveraged to disrupt normal system operations. The vulnerability specifically requires adjacent network access for exploitation, meaning an attacker must be physically present within the wireless network coverage area or have access to the same network segment. This adjacency requirement reduces the attack surface compared to remotely exploitable vulnerabilities but does not eliminate the threat entirely, particularly in shared or public wireless environments where physical proximity can be achieved through social engineering or opportunistic access.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as memory corruption can potentially lead to system instability, crashes, or even privilege escalation in certain configurations. In enterprise environments where wireless infrastructure serves critical business operations, this vulnerability could result in significant service interruptions affecting multiple users simultaneously. The lack of authentication requirements for exploitation makes this particularly dangerous as it allows any nearby individual to potentially disrupt wireless services without requiring credentials or advanced attack capabilities. Network administrators may experience unexpected service outages, increased support tickets, and potential security incidents that could affect business continuity and user productivity.
Mitigation strategies for CVE-2020-8689 should prioritize immediate software updates to version 1.5 or later, which contain the necessary buffer validation fixes. Organizations should also implement network segmentation and access controls to limit physical proximity to wireless infrastructure, particularly in sensitive environments. Network monitoring solutions should be deployed to detect unusual traffic patterns or service disruptions that might indicate exploitation attempts. Additionally, regular vulnerability assessments and security audits should be conducted to identify other potentially affected components within the wireless ecosystem. The remediation process should follow established security protocols including change management procedures, testing in controlled environments, and comprehensive deployment scheduling to minimize operational disruption while maintaining security posture. This vulnerability serves as a reminder of the critical importance of proper input validation and buffer management in network security components, aligning with ATT&CK technique T1499 for network denial of service and emphasizing the need for robust software security practices throughout the development lifecycle.