CVE-2019-11516

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Summary

CVECVE-2019-11516
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-02-05 17:15:00 UTC
Updated2020-04-13 15:15:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Google Android - All All All
Operating System Google Android - All All All

References

ReferenceSourceLinkTags
Android Security Bulletin—August 2019  |  Android Open Source Project CONFIRM source.android.com Third Party Advisory
Multiple Vulnerabilities in Google Android OS Could Allow for Arbitrary Code Execution MISC www.cisecurity.org Third Party Advisory
Android Security Bulletin August 2019: What you need to know - TechRepublic MISC www.techrepublic.com Third Party Advisory
Login | Cypress Developer Community MISC community.cypress.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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