Details of VAR-202007-0690

ID

VAR-202007-0690

CVE

CVE-2020-15688

TITLE

GoAhead In Capture-replay Authentication Bypass Vulnerability

Trust: 0.8

sources: JVNDB: JVNDB-2020-008671

DESCRIPTION

The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel. GoAhead for, Capture-replay An authentication bypass vulnerability exists.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. GoAhead is the world's most popular, tiny embedded web server. It is compact, secure and simple to use. GoAhead is deployed in hundreds of millions of devices and is ideal for the smallest of embedded devices.A security vulnerability affecting GoAhead versions 2 to 5 has been identified when using Digest authentication over HTTP. GoAhead versions 3 to 5 validated the nonce with a fixed duration of 5 minutes which permitted short-period replays. This duration is too long for most implementations.Tested on: GoAhead-httpGoAhead-Webs. There is a security vulnerability in Embedthis Software GoAhead versions before 5.1.2. An attacker could exploit this vulnerability to bypass authentication

Trust: 1.8

sources: NVD: CVE-2020-15688 // JVNDB: JVNDB-2020-008671 // ZSL: ZSL-2020-5598 // VULHUB: VHN-168691

AFFECTED PRODUCTS

vendor:	embedthis	model:	goahead	scope:	lt	version:	5.1.2	Trust: 1.0
vendor:	embedthis	model:	goahead	scope:	eq	version:	-	Trust: 0.8
vendor:	embedthis	model:	goahead	scope:	eq	version:	5.1.2	Trust: 0.8
vendor:	embedthis	model:	goahead web server	scope:	lt	version:	<=5.1.1 and <=4.1.2	Trust: 0.1

sources: ZSL: ZSL-2020-5598 // JVNDB: JVNDB-2020-008671 // NVD: CVE-2020-15688

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-15688
value:	HIGH
Trust: 1.0
NVD:	CVE-2020-15688
value:	HIGH
Trust: 0.8
CNNVD:	CNNVD-202007-1390
value:	HIGH
Trust: 0.6
ZSL:	ZSL-2020-5598
value:	(3/5)
Trust: 0.1
VULHUB:	VHN-168691
value:	MEDIUM
Trust: 0.1

nvd@nist.gov:	CVE-2020-15688
severity:	MEDIUM
baseScore:	6.8
vectorString:	AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8
VULHUB:	VHN-168691
severity:	MEDIUM
baseScore:	6.8
vectorString:	AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector:	NETWORK
accessComplexity:	MEDIUM
authentication:	NONE
confidentialityImpact:	PARTIAL
integrityImpact:	PARTIAL
availabilityImpact:	PARTIAL
exploitabilityScore:	8.6
impactScore:	6.4
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 0.1

nvd@nist.gov:	CVE-2020-15688
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	REQUIRED
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	5.9
version:	3.1
Trust: 1.0
NVD:	CVE-2020-15688
baseSeverity:	HIGH
baseScore:	8.8
vectorString:	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	NONE
userInteraction:	REQUIRED
scope:	UNCHANGED
confidentialityImpact:	HIGH
integrityImpact:	HIGH
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: ZSL: ZSL-2020-5598 // VULHUB: VHN-168691 // JVNDB: JVNDB-2020-008671 // CNNVD: CNNVD-202007-1390 // NVD: CVE-2020-15688

PROBLEMTYPE DATA

problemtype:	CWE-294	Trust: 1.1
problemtype:	Capture-replay authentication evasion by (CWE-294) [NVD evaluation ]	Trust: 0.8

sources: VULHUB: VHN-168691 // JVNDB: JVNDB-2020-008671 // NVD: CVE-2020-15688

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202007-1390

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202007-1390

EXPLOIT AVAILABILITY

sources: ZSL: ZSL-2020-5598

PATCH

title:	Digest Nonce Handling over HTTP #3	url:	https://github.com/embedthis/goahead-gpl/issues/3	Trust: 0.8
title:	Embedthis Software GoAhead Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=125067	Trust: 0.6

sources: JVNDB: JVNDB-2020-008671 // CNNVD: CNNVD-202007-1390

EXTERNAL IDS

db:	NVD	id:	CVE-2020-15688	Trust: 3.4
db:	PACKETSTORM	id:	159505	Trust: 1.8
db:	JVN	id:	JVNVU92569237	Trust: 0.8
db:	JVNDB	id:	JVNDB-2020-008671	Trust: 0.8
db:	CXSECURITY	id:	WLB-2020100044	Trust: 0.7
db:	CNNVD	id:	CNNVD-202007-1390	Trust: 0.7
db:	EXPLOIT-DB	id:	48958	Trust: 0.1
db:	ZSL	id:	ZSL-2020-5598	Trust: 0.1
db:	CNVD	id:	CNVD-2020-46563	Trust: 0.1
db:	VULHUB	id:	VHN-168691	Trust: 0.1

sources: ZSL: ZSL-2020-5598 // VULHUB: VHN-168691 // JVNDB: JVNDB-2020-008671 // CNNVD: CNNVD-202007-1390 // NVD: CVE-2020-15688

REFERENCES

url:	http://packetstormsecurity.com/files/159505/embedthis-goahead-web-server-5.1.1-digest-authentication-capture-replay-nonce-reuse.html	Trust: 2.3
url:	https://github.com/embedthis/goahead-gpl/issues/3	Trust: 1.8
url:	https://nvd.nist.gov/vuln/detail/cve-2020-15688	Trust: 1.5
url:	https://jvn.jp/vu/jvnvu92569237/index.html	Trust: 0.8
url:	https://cxsecurity.com/issue/wlb-2020100044	Trust: 0.7
url:	https://github.com/embedthis/goahead-gpl/issues/2	Trust: 0.1
url:	https://github.com/embedthis/appweb-gpl/issues/4	Trust: 0.1
url:	https://cve.mitre.org/cgi-bin/cvename.cgi?name=cve-2020-15688	Trust: 0.1
url:	https://www.tenable.com/cve/cve-2020-15688	Trust: 0.1
url:	https://cert.civis.net/en/index.php?action=alert&param=cve-2020-15688	Trust: 0.1
url:	https://packetstormsecurity.com/files/159505	Trust: 0.1
url:	https://exchange.xforce.ibmcloud.com/vulnerabilities/185771	Trust: 0.1
url:	https://www.exploit-db.com/exploits/48958	Trust: 0.1

sources: ZSL: ZSL-2020-5598 // VULHUB: VHN-168691 // JVNDB: JVNDB-2020-008671 // CNNVD: CNNVD-202007-1390 // NVD: CVE-2020-15688

CREDITS

LiquidWorm

Trust: 0.6

sources: CNNVD: CNNVD-202007-1390

SOURCES

db:	ZSL	id:	ZSL-2020-5598
db:	VULHUB	id:	VHN-168691
db:	JVNDB	id:	JVNDB-2020-008671
db:	CNNVD	id:	CNNVD-202007-1390
db:	NVD	id:	CVE-2020-15688

LAST UPDATE DATE

2024-11-23T21:22:23.777000+00:00

SOURCES UPDATE DATE

db:	ZSL	id:	ZSL-2020-5598	date:	2020-11-04T00:00:00
db:	VULHUB	id:	VHN-168691	date:	2023-01-31T00:00:00
db:	JVNDB	id:	JVNDB-2020-008671	date:	2023-05-11T08:45:00
db:	CNNVD	id:	CNNVD-202007-1390	date:	2020-10-10T00:00:00
db:	NVD	id:	CVE-2020-15688	date:	2024-11-21T05:06:01.080

SOURCES RELEASE DATE

db:	ZSL	id:	ZSL-2020-5598	date:	2020-10-06T00:00:00
db:	VULHUB	id:	VHN-168691	date:	2020-07-23T00:00:00
db:	JVNDB	id:	JVNDB-2020-008671	date:	2020-09-18T00:00:00
db:	CNNVD	id:	CNNVD-202007-1390	date:	2020-07-23T00:00:00
db:	NVD	id:	CVE-2020-15688	date:	2020-07-23T13:15:10.257