CVE-2019-11516— Android Broadcom Bluetooth组件缓冲区错误漏洞

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An issue was discovered in the Bluetooth component of the Cypress (formerly owned by Broadcom) Wireless IoT codebase. Extended Inquiry Responses (EIRs) are improperly handled, which causes a heap-based buffer overflow during device inquiry. This overflow can be used to overwrite existing functions with arbitrary code. The Reserved for Future Use (RFU) bits are not discarded by eir_handleRx(), and are included in an EIR's length. Therefore, one can exceed the expected 240 bytes, which leads to a heap-based buffer overflow in eir_getReceivedEIR() called by bthci_event_SendInquiryResultEvent(). In order to exploit this bug, an attacker must repeatedly connect to the victim's device in a short amount of time from different source addresses. This will cause the victim's Bluetooth stack to resolve the device names and therefore allocate buffers with attacker-controlled data. Due to the heap corruption, the name will be eventually written to an attacker-controlled location, leading to a write-what-where condition.

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Android Broadcom Bluetooth组件缓冲区错误漏洞

Android是美国谷歌（Google）和开放手持设备联盟（简称OHA）的一套以Linux为基础的开源操作系统。 Android中的Broadcom Bluetooth存在远程代码执行漏洞。远程攻击者可利用该漏洞执行任意代码。

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