Details of VAR-202004-0826

ID

VAR-202004-0826

CVE

CVE-2019-13916

TITLE

Cypress WICED Studio Out-of-bounds write vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2019-015446

DESCRIPTION

An issue was discovered in Cypress (formerly Broadcom) WICED Studio 6.2 CYW20735B1 and CYW20819A1. As a Bluetooth Low Energy (BLE) packet is received, it is copied into a Heap (ThreadX Block) buffer. The buffer allocated in dhmulp_getRxBuffer is four bytes too small to hold the maximum of 255 bytes plus headers. It is possible to corrupt a pointer in the linked list holding the free buffers of the g_mm_BLEDeviceToHostPool Block pool. This pointer can be fully controlled by overflowing with 3 bytes of packet data and the first byte of the packet CRC checksum. The checksum can be freely chosen by adapting the packet data accordingly. An attacker might be able to allocate the overwritten address as a receive buffer resulting in a write-what-where condition. This is fixed in BT SDK2.4 and BT SDK2.45. Cypress ( Old Broadcom) WICED Studio Is vulnerable to out-of-bounds writes.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be put into a state. Cypress Semiconductor WICED Studio is an Internet of Things (IoT) SDK (software development kit) that combines Wi-Fi and Bluetooth into a single integrated development environment by Cypress Semiconductor. There is a buffer error vulnerability in Cypress Semiconductor WICED Studio 6.2 version CYW20735B1 and CYW20819A1. The vulnerability stems from the fact that when a network system or product performs an operation on memory, the data boundary is not correctly verified, resulting in an incorrect read and write operation to other associated memory locations. Attackers can use this vulnerability to cause buffer overflow or heap overflow

Trust: 2.7

sources: NVD: CVE-2019-13916 // JVNDB: JVNDB-2019-015446 // CNVD: CNVD-2020-22852 // CNNVD: CNNVD-202004-625

IOT TAXONOMY

category:	['IoT']	sub_category:	-	Trust: 0.6
category:	['other device']	sub_category:	general	Trust: 0.1

sources: OTHER: None // CNVD: CNVD-2020-22852

AFFECTED PRODUCTS

vendor:	cypress	model:	wiced studio	scope:	eq	version:	6.2	Trust: 1.8
vendor:	cypress	model:	semiconductor wiced studio cyw20735b1	scope:	eq	version:	6.2	Trust: 0.6
vendor:	cypress	model:	semiconductor wiced studio cyw20819a1	scope:	-	version:	-	Trust: 0.6

sources: CNVD: CNVD-2020-22852 // JVNDB: JVNDB-2019-015446 // NVD: CVE-2019-13916

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2019-13916
value:	HIGH
Trust: 1.0
NVD:	JVNDB-2019-015446
value:	HIGH
Trust: 0.8
CNVD:	CNVD-2020-22852
value:	MEDIUM
Trust: 0.6
CNNVD:	CNNVD-202004-625
value:	HIGH
Trust: 0.6

nvd@nist.gov:	CVE-2019-13916
severity:	MEDIUM
baseScore:	5.8
vectorString:	AV:A/AC:L/AU:N/C:P/I:P/A:P
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	6.5
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.0
NVD:	JVNDB-2019-015446
severity:	MEDIUM
baseScore:	5.8
vectorString:	AV:A/AC:L/AU:N/C:P/I:P/A:P
accessVector:	ADJACENT NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	NONE
impactScore:	NONE
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.8
CNVD:	CNVD-2020-22852
severity:	MEDIUM
baseScore:	5.0
vectorString:	AV:N/AC:L/AU:N/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.6

nvd@nist.gov:	CVE-2019-13916
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	JVNDB-2019-015446
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	ADJACENT NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: CNVD: CNVD-2020-22852 // JVNDB: JVNDB-2019-015446 // CNNVD: CNNVD-202004-625 // NVD: CVE-2019-13916

PROBLEMTYPE DATA

problemtype:

CWE-787

Trust: 1.8

sources: JVNDB: JVNDB-2019-015446 // NVD: CVE-2019-13916

THREAT TYPE

remote or local

Trust: 0.6

sources: CNNVD: CNNVD-202004-625

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202004-625

CONFIGURATIONS

sources: JVNDB: JVNDB-2019-015446

PATCH

title:	Top Page	url:	https://www.cypress.com/	Trust: 0.8
title:	Patch for Cypress Semiconductor WICED Studio buffer overflow vulnerability	url:	https://www.cnvd.org.cn/patchInfo/show/213851	Trust: 0.6
title:	Cypress Semiconductor WICED Studio Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=116833	Trust: 0.6

sources: CNVD: CNVD-2020-22852 // JVNDB: JVNDB-2019-015446 // CNNVD: CNNVD-202004-625

EXTERNAL IDS

db:	NVD	id:	CVE-2019-13916	Trust: 3.1
db:	JVNDB	id:	JVNDB-2019-015446	Trust: 0.8
db:	CNVD	id:	CNVD-2020-22852	Trust: 0.6
db:	CNNVD	id:	CNNVD-202004-625	Trust: 0.6
db:	OTHER	id:	NONE	Trust: 0.1

sources: OTHER: None // CNVD: CNVD-2020-22852 // JVNDB: JVNDB-2019-015446 // CNNVD: CNNVD-202004-625 // NVD: CVE-2019-13916

REFERENCES

url:	https://github.com/seemoo-lab/frankenstein/blob/master/doc/cve_2019_13916.md	Trust: 2.4
url:	https://community.cypress.com/thread/53681	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2019-13916	Trust: 1.4
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2019-13916	Trust: 0.8
url:	https://ieeexplore.ieee.org/abstract/document/10769424	Trust: 0.1

sources: OTHER: None // JVNDB: JVNDB-2019-015446 // CNNVD: CNNVD-202004-625 // NVD: CVE-2019-13916

SOURCES

db:	OTHER	id:	-
db:	CNVD	id:	CNVD-2020-22852
db:	JVNDB	id:	JVNDB-2019-015446
db:	CNNVD	id:	CNNVD-202004-625
db:	NVD	id:	CVE-2019-13916

LAST UPDATE DATE

2025-01-30T22:24:59.826000+00:00

SOURCES UPDATE DATE

db:	CNVD	id:	CNVD-2020-22852	date:	2020-04-15T00:00:00
db:	JVNDB	id:	JVNDB-2019-015446	date:	2020-05-20T00:00:00
db:	CNNVD	id:	CNNVD-202004-625	date:	2020-04-26T00:00:00
db:	NVD	id:	CVE-2019-13916	date:	2024-11-21T04:25:41.560

SOURCES RELEASE DATE

db:	CNVD	id:	CNVD-2020-22852	date:	2020-04-14T00:00:00
db:	JVNDB	id:	JVNDB-2019-015446	date:	2020-05-20T00:00:00
db:	CNNVD	id:	CNNVD-202004-625	date:	2020-04-13T00:00:00
db:	NVD	id:	CVE-2019-13916	date:	2020-04-13T17:15:10.877