CVE-2017-18058 in Android
Summary
by MITRE
In Android for MSM, Firefox OS for MSM, QRD Android, with all Android releases from CAF using the Linux kernel, improper input validation for wow_buf_pkt_len in wma_wow_wakeup_host_event() which is received from firmware leads to potential out of bounds memory read.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 02/22/2023
This vulnerability exists within the Android operating system and related mobile platforms that utilize the Linux kernel framework. The issue is specifically found in the wireless media access layer implementation where the system fails to properly validate input parameters received from firmware components. The flaw manifests in the wma_wow_wakeup_host_event() function which processes wow_buf_pkt_len parameters, creating a potential memory access violation that could be exploited by malicious actors.
The technical implementation of this vulnerability stems from inadequate bounds checking within the wireless subsystem's wake-on-wireless functionality. When firmware sends packet length information to the host system through the wow_buf_pkt_len parameter, the system does not sufficiently validate this input before using it to access memory buffers. This allows for potential out-of-bounds memory reads that could be leveraged to extract sensitive information from kernel memory spaces. The vulnerability is classified under CWE-129 as an improper input validation issue that leads to buffer over-read conditions.
The operational impact of this vulnerability extends beyond simple information disclosure. Attackers could potentially exploit this weakness to gain unauthorized access to kernel memory contents, which might contain sensitive data such as cryptographic keys, user credentials, or system configuration details. The vulnerability affects multiple Android variants including MSM (Mobile Station Modem) platforms and Firefox OS implementations, making it particularly concerning for widespread deployment. This type of vulnerability aligns with ATT&CK technique T1068 which involves local privilege escalation through kernel exploits.
The security implications of this vulnerability are significant as it represents a potential pathway for attackers to escalate privileges and access sensitive system resources. The out-of-bounds memory read condition could be exploited to trigger memory corruption or information leakage that might aid in further exploitation attempts. Organizations should consider implementing kernel memory protection mechanisms and ensuring that all firmware components properly validate input parameters before transmission to host systems. The vulnerability demonstrates the importance of robust input validation in kernel-level code and the necessity of comprehensive security testing for wireless subsystem implementations.
Mitigation strategies should focus on strengthening input validation mechanisms within the wireless subsystem and implementing proper bounds checking for all firmware-to-host communications. System administrators should ensure that all devices are running the latest security patches and firmware updates that address this specific vulnerability. Additionally, monitoring for suspicious wireless activity and implementing network segmentation can help reduce the potential attack surface. The vulnerability highlights the need for comprehensive security testing of kernel modules and firmware interactions, particularly in mobile platforms where wireless connectivity is essential for device functionality.