CVE-2021-21777

CVSS V2 High 9.4 CVSS V3 Critical 10

Description

An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer 2.3 and development commit 8c73bf3. A specially crafted network request can lead to an out-of-bounds read.

Overview

CVE ID
CVE-2021-21777

Assigner
talos-cna@cisco.com

Vulnerability Status
Analyzed

Published Version
2021-06-17T11:15:07

Last Modified Date
2022-08-24T21:56:41

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:opener_project:opener:2.3:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
NONE

Availability Impact
COMPLETE

Base Score
9.4

Severity
HIGH

Exploitability Score
10

Impact Score
9.2

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
CHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
10

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.8

References

Reference URL	Reference Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1234	Exploit Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-21777
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-21777

History

Created	Old Value	New Value	Data Type	Notes
2022-04-20 17:00:23				Added to TrackCVE
2022-12-05 04:34:50	2021-06-17T11:15Z	2021-06-17T11:15:07	CVE Published Date	updated
2022-12-05 04:34:50		2022-08-24T21:56:41	CVE Modified Date	updated
2022-12-05 04:34:50		Analyzed	Vulnerability Status	updated