CVE-2021-21876

CVSS V2 Medium 6.5 CVSS V3 Critical 9.1

Description

Specially-crafted HTTP requests can lead to arbitrary command execution in PUT requests. An attacker can make authenticated HTTP requests to trigger this vulnerability.

Overview

CVE ID
CVE-2021-21876

Assigner
talos-cna@cisco.com

Vulnerability Status
Analyzed

Published Version
2021-12-22T19:15:08

Last Modified Date
2022-10-05T14:44:08

Weakness Enumerations

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

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
		AND
cpe:2.3:o:lantronix:premierwave_2050_firmware:8.9.0.0:r4::::::	1	OR
cpe:2.3:h:lantronix:premierwave_2050:-:::::::*	0	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
SINGLE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.5

Severity
MEDIUM

Exploitability Score
8

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
HIGH

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.1

Base Severity
CRITICAL

Exploitability Score
2.3

Impact Score
6

References

Reference URL	Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1315	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-21876
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21876

History

Created	Old Value	New Value	Data Type	Notes
2022-04-20 17:01:52				Added to TrackCVE
2022-12-06 04:34:58	2021-12-22T19:15Z	2021-12-22T19:15:08	CVE Published Date	updated
2022-12-06 04:34:58		2022-10-05T14:44:08	CVE Modified Date	updated
2022-12-06 04:34:58		Analyzed	Vulnerability Status	updated