CVE-2020-5756

CVSS V2 High 9 CVSS V3 High 8.8

Description

Grandstream GWN7000 firmware version 1.0.9.4 and below allows authenticated remote users to modify the system's crontab via undocumented API. An attacker can use this functionality to execute arbitrary OS commands on the router.

Overview

CVE ID
CVE-2020-5756

Assigner
vulnreport@tenable.com

Vulnerability Status
Analyzed

Published Version
2020-07-17T21:15:13

Last Modified Date
2020-07-22T20:43:00

Weakness Enumerations

CWE	URL
CWE-78	http://cwe.mitre.org/data/definitions/78.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:grandstream:gwn7000_firmware::::::::	1	OR	1.0.9.4
cpe:2.3:h:grandstream:gwn7000:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:L/Au:S/C:C/I:C/A:C

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
SINGLE

Confidentiality Impact
COMPLETE

Integrity Impact
COMPLETE

Availability Impact
COMPLETE

Base Score
9

Severity
HIGH

Exploitability Score
8

Impact Score
10

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.8

Base Severity
HIGH

Exploitability Score
2.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://www.tenable.com/security/research/tra-2020-41	Not Applicable
https://www.tenable.com/cve/CVE-2020-5756	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-5756
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-5756

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:40:04				Added to TrackCVE
2022-12-04 20:01:22	2020-07-17T21:15Z	2020-07-17T21:15:13	CVE Published Date	updated
2022-12-04 20:01:22		2020-07-22T20:43:00	CVE Modified Date	updated
2022-12-04 20:01:22		Analyzed	Vulnerability Status	updated