CVE-2017-11580

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Summary

CVECVE-2017-11580
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-07-02 21:15:00 UTC
Updated2019-07-15 13:30:00 UTC
DescriptionBlipcare Wifi blood pressure monitor BP700 10.1 devices allow memory corruption that results in Denial of Service. When connected to the "Blip" open wireless connection provided by the device, if a large string is sent as a part of the HTTP request in any part of the HTTP headers, the device could become completely unresponsive. Presumably this happens as the memory footprint provided to this device is very small. According to the specs from Rezolt, the Wi-Fi module only has 256k of memory. As a result, an incorrect string copy operation using either memcpy, strcpy, or any of their other variants could result in filling up the memory space allocated to the function executing and this would result in memory corruption. To test the theory, one can modify the demo application provided by the Cypress WICED SDK and introduce an incorrect "memcpy" operation and use the compiled application on the evaluation board provided by Cypress semiconductors with exactly the same Wi-Fi SOC. The results were identical where the device would completely stop responding to any of the ping or web requests.

Risk And Classification

Problem Types: CWE-399

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Blipcare Wi-fi Blood Pressure Monitor - All All All
Hardware Blipcare Wi-fi Blood Pressure Monitor - All All All
Operating System Blipcare Wi-fi Blood Pressure Monitor Firmware All All All All

References

ReferenceSourceLinkTags
Blipcare Clear Text Communication / Memory Corruption ≈ Packet Storm MISC packetstormsecurity.com Third Party Advisory, VDB Entry
IoT_vulnerabilities/Blipcare_sec_issues.pdf at master · ethanhunnt/IoT_vulnerabilities · GitHub MISC github.com Exploit, Third Party Advisory
Bugtraq: Newly releases IoT security issues BUGTRAQ seclists.org Mailing List, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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