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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 55%
VendorProductVersion
snap7_projectsnap7_server
1.4.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/
https://sourceforge.net/p/snap7/discussion/bugfix/thread/2d2d085c/