Details of VAR-202011-0887

ID

VAR-202011-0887

CVE

CVE-2020-28242

TITLE

Asterisk Open Source and Certified Asterisk Recursion control vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2020-013387

DESCRIPTION

An issue was discovered in Asterisk Open Source 13.x before 13.37.1, 16.x before 16.14.1, 17.x before 17.8.1, and 18.x before 18.0.1 and Certified Asterisk before 16.8-cert5. If Asterisk is challenged on an outbound INVITE and the nonce is changed in each response, Asterisk will continually send INVITEs in a loop. This causes Asterisk to consume more and more memory since the transaction will never terminate (even if the call is hung up), ultimately leading to a restart or shutdown of Asterisk. Outbound authentication must be configured on the endpoint for this to occur

Trust: 1.62

sources: NVD: CVE-2020-28242 // JVNDB: JVNDB-2020-013387

AFFECTED PRODUCTS

vendor:	fedoraproject	model:	fedora	scope:	eq	version:	33	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	gte	version:	13.0	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	gte	version:	18.0	Trust: 1.0
vendor:	asterisk	model:	certified asterisk	scope:	lte	version:	16.8.0	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	gte	version:	16.0	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	lt	version:	13.37.1	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	lt	version:	18.0.1	Trust: 1.0
vendor:	debian	model:	linux	scope:	eq	version:	9.0	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	lt	version:	17.8.1	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	lt	version:	16.14.1	Trust: 1.0
vendor:	sangoma	model:	asterisk	scope:	gte	version:	17.0	Trust: 1.0
vendor:	digium	model:	asterisk open source	scope:	-	version:	-	Trust: 0.8
vendor:	digium	model:	certified asterisk	scope:	eq	version:	16.8-cert5	Trust: 0.8

sources: JVNDB: JVNDB-2020-013387 // NVD: CVE-2020-28242

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov:	CVE-2020-28242
value:	MEDIUM
Trust: 1.0
NVD:	CVE-2020-28242
value:	MEDIUM
Trust: 0.8
CNNVD:	CNNVD-202011-675
value:	MEDIUM
Trust: 0.6

nvd@nist.gov:	CVE-2020-28242
severity:	MEDIUM
baseScore:	4.0
vectorString:	AV:N/AC:L/AU:S/C:N/I:N/A:P
accessVector:	NETWORK
accessComplexity:	LOW
authentication:	SINGLE
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	PARTIAL
exploitabilityScore:	8.0
impactScore:	2.9
acInsufInfo:	NONE
obtainAllPrivilege:	NONE
obtainUserPrivilege:	NONE
obtainOtherPrivilege:	NONE
userInteractionRequired:	NONE
version:	2.0
Trust: 1.8

nvd@nist.gov:	CVE-2020-28242
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	2.8
impactScore:	3.6
version:	3.1
Trust: 1.0
NVD:	CVE-2020-28242
baseSeverity:	MEDIUM
baseScore:	6.5
vectorString:	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
attackVector:	NETWORK
attackComplexity:	LOW
privilegesRequired:	LOW
userInteraction:	NONE
scope:	UNCHANGED
confidentialityImpact:	NONE
integrityImpact:	NONE
availabilityImpact:	HIGH
exploitabilityScore:	NONE
impactScore:	NONE
version:	3.0
Trust: 0.8

sources: JVNDB: JVNDB-2020-013387 // CNNVD: CNNVD-202011-675 // NVD: CVE-2020-28242

PROBLEMTYPE DATA

problemtype:	CWE-674	Trust: 1.0
problemtype:	Inappropriate recursive control (CWE-674) [NVD Evaluation ]	Trust: 0.8

sources: JVNDB: JVNDB-2020-013387 // NVD: CVE-2020-28242

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202011-675

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202011-675

PATCH

title:	AST-2020-002	url:	http://downloads.asterisk.org/pub/security/AST-2020-002.html	Trust: 0.8
title:	Digium Asterisk Open Source and Certified Asterisk Security vulnerabilities	url:	http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=135266	Trust: 0.6

sources: JVNDB: JVNDB-2020-013387 // CNNVD: CNNVD-202011-675

EXTERNAL IDS

db:	NVD	id:	CVE-2020-28242	Trust: 2.4
db:	JVNDB	id:	JVNDB-2020-013387	Trust: 0.8
db:	CNNVD	id:	CNNVD-202011-675	Trust: 0.6

sources: JVNDB: JVNDB-2020-013387 // CNNVD: CNNVD-202011-675 // NVD: CVE-2020-28242

REFERENCES

url:	http://downloads.asterisk.org/pub/security/ast-2020-002.html	Trust: 1.6
url:	https://lists.debian.org/debian-lts-announce/2022/04/msg00001.html	Trust: 1.6
url:	https://nvd.nist.gov/vuln/detail/cve-2020-28242	Trust: 1.4
url:	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/qus54qtqcykr36eiulyd544gxda644hb/	Trust: 1.0
url:	https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/qus54qtqcykr36eiulyd544gxda644hb/	Trust: 0.6

sources: JVNDB: JVNDB-2020-013387 // CNNVD: CNNVD-202011-675 // NVD: CVE-2020-28242

SOURCES

db:	JVNDB	id:	JVNDB-2020-013387
db:	CNNVD	id:	CNNVD-202011-675
db:	NVD	id:	CVE-2020-28242

LAST UPDATE DATE

2024-11-23T22:11:15.384000+00:00

SOURCES UPDATE DATE

db:	JVNDB	id:	JVNDB-2020-013387	date:	2021-06-29T08:35:00
db:	CNNVD	id:	CNNVD-202011-675	date:	2022-04-06T00:00:00
db:	NVD	id:	CVE-2020-28242	date:	2024-11-21T05:22:30.340

SOURCES RELEASE DATE

db:	JVNDB	id:	JVNDB-2020-013387	date:	2021-06-29T00:00:00
db:	CNNVD	id:	CNNVD-202011-675	date:	2020-11-06T00:00:00
db:	NVD	id:	CVE-2020-28242	date:	2020-11-06T06:15:11.930