Details of VAR-202112-0361

ID

VAR-202112-0361

CVE

CVE-2021-20038

TITLE

plural SonicWALL Appliance out-of-bounds write vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2021-016109

DESCRIPTION

A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows a remote unauthenticated attacker to potentially execute code as a 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances firmware 10.2.0.8-37sv, 10.2.1.1-19sv, 10.2.1.2-24sv and earlier versions. plural SonicWALL Appliances contain an out-of-bounds write vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state

Trust: 1.71

sources: NVD: CVE-2021-20038 // JVNDB: JVNDB-2021-016109 // VULMON: CVE-2021-20038

AFFECTED PRODUCTS

vendor:	sonicwall	model:	sma 400	scope:	eq	version:	10.2.1.2-24sv	Trust: 1.0
vendor:	sonicwall	model:	sma 500v	scope:	eq	version:	10.2.1.1-19sv	Trust: 1.0
vendor:	sonicwall	model:	sma 410	scope:	eq	version:	10.2.0.8-37sv	Trust: 1.0
vendor:	sonicwall	model:	sma 200	scope:	eq	version:	10.2.0.8-37sv	Trust: 1.0
vendor:	sonicwall	model:	sma 400	scope:	eq	version:	10.2.0.8-37sv	Trust: 1.0
vendor:	sonicwall	model:	sma 410	scope:	eq	version:	10.2.1.2-24sv	Trust: 1.0
vendor:	sonicwall	model:	sma 200	scope:	eq	version:	10.2.1.2-24sv	Trust: 1.0
vendor:	sonicwall	model:	sma 210	scope:	eq	version:	10.2.1.1-19sv	Trust: 1.0
vendor:	sonicwall	model:	sma 200	scope:	eq	version:	10.2.1.1-19sv	Trust: 1.0
vendor:	sonicwall	model:	sma 400	scope:	eq	version:	10.2.1.1-19sv	Trust: 1.0
vendor:	sonicwall	model:	sma 500v	scope:	eq	version:	10.2.0.8-37sv	Trust: 1.0
vendor:	sonicwall	model:	sma 500v	scope:	eq	version:	10.2.1.2-24sv	Trust: 1.0
vendor:	sonicwall	model:	sma 410	scope:	eq	version:	10.2.1.1-19sv	Trust: 1.0
vendor:	sonicwall	model:	sma 210	scope:	eq	version:	10.2.0.8-37sv	Trust: 1.0
vendor:	sonicwall	model:	sma 210	scope:	eq	version:	10.2.1.2-24sv	Trust: 1.0
vendor:	sonicwall	model:	sma200	scope:	-	version:	-	Trust: 0.8
vendor:	sonicwall	model:	sma410	scope:	-	version:	-	Trust: 0.8
vendor:	sonicwall	model:	sma400	scope:	-	version:	-	Trust: 0.8
vendor:	sonicwall	model:	sma500v	scope:	-	version:	-	Trust: 0.8
vendor:	sonicwall	model:	sma210	scope:	-	version:	-	Trust: 0.8

sources: JVNDB: JVNDB-2021-016109 // NVD: CVE-2021-20038

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2021-20038
value:	CRITICAL
Trust: 1.0
NVD:	CVE-2021-20038
value:	CRITICAL
Trust: 0.8
CNNVD:	CNNVD-202112-557
value:	CRITICAL
Trust: 0.6
VULMON:	CVE-2021-20038
value:	HIGH
Trust: 0.1

nvd@nist.gov:	CVE-2021-20038
severity:	HIGH
baseScore:	7.5
vectorString:	AV:N/AC:L/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	10.0
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.9

nvd@nist.gov:	CVE-2021-20038
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	3.9
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2021-20038
baseSeverity:	CRITICAL
baseScore:	9.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector:	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: VULMON: CVE-2021-20038 // JVNDB: JVNDB-2021-016109 // CNNVD: CNNVD-202112-557 // NVD: CVE-2021-20038

PROBLEMTYPE DATA

problemtype:	CWE-121	Trust: 1.0
problemtype:	CWE-787	Trust: 1.0
problemtype:	Out-of-bounds writing (CWE-787) [NVD evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2021-016109 // NVD: CVE-2021-20038

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202112-557

TYPE

buffer error

Trust: 0.6

sources: CNNVD: CNNVD-202112-557

PATCH

title:	SNWLID-2021-0026	url:	https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026	Trust: 0.8
title:	Sonicwall SMA100 Buffer error vulnerability fix	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=174193	Trust: 0.6
title:	-	url:	https://github.com/ExploitPwner/CVE-2021-20038-Mass-RCE-SonicWall	Trust: 0.1
title:	nmap-scripts	url:	https://github.com/S3ntinelX/nmap-scripts	Trust: 0.1
title:	-	url:	https://github.com/XmasSnowREAL/CVE-2021-20038-Mass-RCE	Trust: 0.1
title:	-	url:	https://github.com/ExploitPwner/CVE-2021-20038-Mass-RCE	Trust: 0.1
title:	BleepingComputer	url:	https://www.bleepingcomputer.com/news/security/attackers-now-actively-targeting-critical-sonicwall-rce-bug/	Trust: 0.1
title:	Threatpost	url:	https://threatpost.com/sonicwall-nac-vulnerability-apache-mods/177529/	Trust: 0.1
title:	The Register	url:	https://www.theregister.co.uk/2022/01/11/sonicwall_multiple_vulns/	Trust: 0.1
title:	Threatpost	url:	https://threatpost.com/critical-sonicwall-vpn-bugs-appliance-takeover/176869/	Trust: 0.1

sources: VULMON: CVE-2021-20038 // JVNDB: JVNDB-2021-016109 // CNNVD: CNNVD-202112-557

EXTERNAL IDS

db:	NVD	id:	CVE-2021-20038	Trust: 3.3
db:	JVNDB	id:	JVNDB-2021-016109	Trust: 0.8
db:	CS-HELP	id:	SB2021120713	Trust: 0.6
db:	CNNVD	id:	CNNVD-202112-557	Trust: 0.6
db:	VULMON	id:	CVE-2021-20038	Trust: 0.1

sources: VULMON: CVE-2021-20038 // JVNDB: JVNDB-2021-016109 // CNNVD: CNNVD-202112-557 // NVD: CVE-2021-20038

REFERENCES

url:	https://www.rapid7.com/blog/post/2022/01/11/cve-2021-20038-42-sonicwall-sma-100-multiple-vulnerabilities-fixed-2/	Trust: 2.5
url:	https://psirt.global.sonicwall.com/vuln-detail/snwlid-2021-0026	Trust: 1.7
url:	https://github.com/jbaines-r7/badblood	Trust: 1.7
url:	https://nvd.nist.gov/vuln/detail/cve-2021-20038	Trust: 1.4
url:	https://www.cybersecurity-help.cz/vdb/sb2021120713	Trust: 0.6
url:	https://cwe.mitre.org/data/definitions/787.html	Trust: 0.1
url:	https://github.com/exploitpwner/cve-2021-20038-mass-rce-sonicwall	Trust: 0.1
url:	https://github.com/s3ntinelx/nmap-scripts	Trust: 0.1
url:	https://nvd.nist.gov	Trust: 0.1
url:	https://threatpost.com/sonicwall-nac-vulnerability-apache-mods/177529/	Trust: 0.1

sources: VULMON: CVE-2021-20038 // JVNDB: JVNDB-2021-016109 // CNNVD: CNNVD-202112-557 // NVD: CVE-2021-20038

SOURCES

db:	VULMON	id:	CVE-2021-20038
db:	JVNDB	id:	JVNDB-2021-016109
db:	CNNVD	id:	CNNVD-202112-557
db:	NVD	id:	CVE-2021-20038

LAST UPDATE DATE

2024-08-14T13:23:03.889000+00:00

SOURCES UPDATE DATE

db:	VULMON	id:	CVE-2021-20038	date:	2022-05-13T00:00:00
db:	JVNDB	id:	JVNDB-2021-016109	date:	2022-12-06T09:05:00
db:	CNNVD	id:	CNNVD-202112-557	date:	2022-05-05T00:00:00
db:	NVD	id:	CVE-2021-20038	date:	2022-05-13T14:54:32.797

SOURCES RELEASE DATE

db:	VULMON	id:	CVE-2021-20038	date:	2021-12-08T00:00:00
db:	JVNDB	id:	JVNDB-2021-016109	date:	2022-12-06T00:00:00
db:	CNNVD	id:	CNNVD-202112-557	date:	2021-12-07T00:00:00
db:	NVD	id:	CVE-2021-20038	date:	2021-12-08T10:15:07.750