CVE-2017-1000230

CVSS V2 Medium 5 CVSS V3 High 7.5

Description

The Snap7 Server version 1.4.1 can be crashed when the ItemCount field of the ReadVar or WriteVar functions of the S7 protocol implementation in Snap7 are provided with unexpected input, thus resulting in denial of service attack.

Overview

CVE ID
CVE-2017-1000230

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2017-11-17T21:29:00

Last Modified Date
2017-12-02T12:55:14

Weakness Enumerations

CWE	URL
CWE-20	http://cwe.mitre.org/data/definitions/20.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:snap7_project:snap7_server:1.4.1:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
5

Severity
MEDIUM

Exploitability Score
10

Impact Score
2.9

CVSS Version 3

Version
3.0

Vector String
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
7.5

Base Severity
HIGH

Exploitability Score
3.9

Impact Score
3.6

References

Reference URL	Reference Tags
https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2017-1000230
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-1000230

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 08:10:04				Added to TrackCVE
2022-12-02 23:15:33	2017-11-17T21:29Z	2017-11-17T21:29:00	CVE Published Date	updated
2022-12-02 23:15:33		2017-12-02T12:55:14	CVE Modified Date	updated
2022-12-02 23:15:33		Analyzed	Vulnerability Status	updated