Details of VAR-201704-1478

ID

VAR-201704-1478

CVE

CVE-2017-6956

TITLE

Broadcom Wi-Fi HardMAC SoC of fbt Firmware buffer error vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2017-002957

DESCRIPTION

On the Broadcom Wi-Fi HardMAC SoC with fbt firmware, a stack buffer overflow occurs when handling an 802.11r (FT) authentication response, leading to remote code execution via a crafted access point that sends a long R0KH-ID field in a Fast BSS Transition Information Element (FT-IE). Broadcom Wi-Fi HardMAC SoC of fbt The firmware contains a buffer error vulnerability.Information is obtained, information is altered, and service operation is disrupted (DoS) An attack may be carried out. Broadcom Wi-Fi HardMAC SoC is a chip produced by Broadcom (Broadcom) for processing PHY and MAC layer processes. A stack buffer overflow vulnerability exists in Broadcom Wi-Fi HardMAC SoCs using fbt firmware. A remote attacker could exploit this vulnerability to execute code

Trust: 1.71

sources: NVD: CVE-2017-6956 // JVNDB: JVNDB-2017-002957 // VULHUB: VHN-115159

IOT TAXONOMY

category:	['network device', 'embedded device']	sub_category:	Wi-Fi router	Trust: 0.1
category:	['network device', 'embedded device']	sub_category:	SoC	Trust: 0.1

sources: OTHER: None

AFFECTED PRODUCTS

vendor:	broadcom	model:	hardmac wi-fi soc	scope:	eq	version:	6.37.34.40	Trust: 1.6
vendor:	broadcom	model:	hardmac wi-fi soc	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2017-002957 // CNNVD: CNNVD-201704-238 // NVD: CVE-2017-6956

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2017-6956
value:	HIGH
Trust: 1.0
NVD:	CVE-2017-6956
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-201704-238
value:	HIGH
Trust: 0.6
VULHUB:	VHN-115159
value:	HIGH
Trust: 0.1

nvd@nist.gov:	CVE-2017-6956
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-115159
severity:	HIGH
baseScore:	8.3
vectorString:	AV:A/AC:L/AU:N/C:C/I:C/A:C
accessVector:	ADJACENT_NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	COMPLETE
integrityImpact:	COMPLETE
availabilityImpact:	COMPLETE
exploitabilityScore:	6.5
impactScore:	10.0
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2017-6956
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
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.0
Trust: 1.8

sources: VULHUB: VHN-115159 // JVNDB: JVNDB-2017-002957 // CNNVD: CNNVD-201704-238 // NVD: CVE-2017-6956

PROBLEMTYPE DATA

problemtype:

CWE-119

Trust: 1.9

sources: VULHUB: VHN-115159 // JVNDB: JVNDB-2017-002957 // NVD: CVE-2017-6956

THREAT TYPE

specific network environment

Trust: 0.6

sources: CNNVD: CNNVD-201704-238

TYPE

buffer overflow

Trust: 0.6

sources: CNNVD: CNNVD-201704-238

CONFIGURATIONS

sources: JVNDB: JVNDB-2017-002957

PATCH

title:	Top Page	url:	https://jp.broadcom.com/	Trust: 0.8
title:	Issue 1059	url:	https://bugs.chromium.org/p/project-zero/issues/detail?id=1059	Trust: 0.8
title:	Broadcom Wi-Fi HardMAC SoC Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=69074	Trust: 0.6

sources: JVNDB: JVNDB-2017-002957 // CNNVD: CNNVD-201704-238

EXTERNAL IDS

db:	NVD	id:	CVE-2017-6956	Trust: 2.6
db:	JVNDB	id:	JVNDB-2017-002957	Trust: 0.8
db:	CNNVD	id:	CNNVD-201704-238	Trust: 0.7
db:	OTHER	id:	NONE	Trust: 0.1
db:	VULHUB	id:	VHN-115159	Trust: 0.1

sources: OTHER: None // VULHUB: VHN-115159 // JVNDB: JVNDB-2017-002957 // CNNVD: CNNVD-201704-238 // NVD: CVE-2017-6956

REFERENCES

url:	https://bugs.chromium.org/p/project-zero/issues/detail?id=1059	Trust: 1.7
url:	https://googleprojectzero.blogspot.com/2017/04/over-air-exploiting-broadcoms-wi-fi_4.html	Trust: 1.7
url:	http://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2017-6956	Trust: 0.8
url:	https://nvd.nist.gov/vuln/detail/cve-2017-6956	Trust: 0.8
url:	https://googleprojectzero.blogspot.jp/2017/04/over-air-exploiting-broadcoms-wi-fi_4.html	Trust: 0.8
url:	https://ieeexplore.ieee.org/abstract/document/10769424	Trust: 0.1

sources: OTHER: None // VULHUB: VHN-115159 // JVNDB: JVNDB-2017-002957 // CNNVD: CNNVD-201704-238 // NVD: CVE-2017-6956

SOURCES

db:	OTHER	id:	-
db:	VULHUB	id:	VHN-115159
db:	JVNDB	id:	JVNDB-2017-002957
db:	CNNVD	id:	CNNVD-201704-238
db:	NVD	id:	CVE-2017-6956

LAST UPDATE DATE

2025-04-20T22:11:23.505000+00:00

SOURCES UPDATE DATE

db:	VULHUB	id:	VHN-115159	date:	2017-04-11T00:00:00
db:	JVNDB	id:	JVNDB-2017-002957	date:	2017-05-09T00:00:00
db:	CNNVD	id:	CNNVD-201704-238	date:	2017-04-07T00:00:00
db:	NVD	id:	CVE-2017-6956	date:	2025-04-20T01:37:25.860

SOURCES RELEASE DATE

db:	VULHUB	id:	VHN-115159	date:	2017-04-05T00:00:00
db:	JVNDB	id:	JVNDB-2017-002957	date:	2017-05-09T00:00:00
db:	CNNVD	id:	CNNVD-201704-238	date:	2017-04-07T00:00:00
db:	NVD	id:	CVE-2017-6956	date:	2017-04-05T14:59:00.370