CVE-2018-13919 in Snapdragon Auto
Summary
by MITRE
Use-after-free vulnerability will occur if reset of the routing table encounters an invalid rule id while processing command to reset in Snapdragon Auto, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon Mobile, Snapdragon Wearables in MDM9150, MDM9206, MDM9607, MDM9650, MSM8909W, QCS405, QCS605, SD 625, SD 636, SD 675, SD 712 / SD 710 / SD 670, SD 730, SD 820, SD 820A, SD 835, SD 845 / SD 850, SD 855, SDM630, SDM660, SDX20, SDX24
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Analysis
by VulDB Data Team • 06/24/2020
This use-after-free vulnerability exists within the network routing table management functionality of multiple Qualcomm Snapdragon chipsets, specifically affecting automotive, consumer electronics, connectivity, iot, industrial, mobile, and wearable device platforms. The flaw manifests when the system attempts to reset routing tables and encounters an invalid rule identifier during command processing, creating a condition where memory previously freed to the system is accessed again. The vulnerability impacts a wide range of Qualcomm hardware platforms including the MDM9150, MDM9206, MDM9607, MDM9650, MSM8909W, QCS405, QCS605, SD 625, SD 636, SD 675, SD 712/SD 710/SD 670, SD 730, SD 820, SD 820A, SD 835, SD 845/SD 850, SD 855, SDM630, SDM660, SDX20, and SDX24 chipsets. The technical implementation involves improper memory management during routing table reset operations where the system fails to validate rule identifiers before proceeding with memory deallocation, leading to potential memory corruption when the freed memory is subsequently accessed. This vulnerability represents a classic use-after-free condition classified under CWE-416, where the application attempts to use memory after it has been freed, creating opportunities for arbitrary code execution or system instability. The operational impact extends across multiple device categories including automotive infotainment systems, mobile devices, industrial IoT equipment, and wearable technology, potentially allowing attackers to execute malicious code with the privileges of the affected process. Attackers could exploit this vulnerability by crafting specific routing table reset commands containing invalid rule identifiers, triggering the memory corruption scenario that leads to privilege escalation or system compromise. The vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as exploitation would likely involve command injection or manipulation of routing table commands. Mitigation strategies include implementing proper input validation for rule identifiers before memory deallocation, adding memory safety checks during routing table operations, and applying firmware updates from Qualcomm to address the specific memory management flaw. Organizations should also consider network segmentation and monitoring for unusual routing table manipulation activities that could indicate exploitation attempts. The vulnerability demonstrates the critical importance of robust memory management in embedded systems and mobile platforms where network routing operations are essential for device functionality. Given the widespread deployment of affected chipsets across automotive, consumer, and industrial markets, this vulnerability presents significant risk to connected devices and could potentially enable attackers to gain persistent access to vehicle systems, industrial control networks, or mobile device platforms. The exploitation of this flaw could result in complete system compromise, data exfiltration, or denial of service conditions across all affected platforms, making immediate remediation essential for organizations deploying these Qualcomm-based devices.