Vulnerability Details : CVE-2017-1000230
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.
Vulnerability category: Input validationDenial of service
Products affected by CVE-2017-1000230
- cpe:2.3:a:snap7_project:snap7_server:1.4.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2017-1000230
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 45 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-1000230
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2017-1000230
-
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-1000230
-
https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/
Snap7 / Discussion / Bugs reporting:Snap7 Server crashes when provided with unexpected inputThird Party Advisory
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