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MitreCVE-2020-27636

HistoryOct 10, 2023 - 5:15 p.m.

CVE-2020-27636

2023-10-1017:15:10

CWE-330

mitre

web.nvd.nist.gov

microchip

mplab

net

3.6.1

tcp

isns

random

vulnerability

cve-2020-27636

nvd

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

9.1

Confidence

High

EPSS

0.001

Percentile

31.5%

JSON

In Microchip MPLAB Net 3.6.1, TCP ISNs are improperly random.

Affected configurations

Nvd

Node

microchipmplab_network_creatorMatch3.6.1

VendorProductVersionCPE
microchipmplab_network_creator3.6.1cpe:2.3:a:microchip:mplab_network_creator:3.6.1:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
microchip	mplab_network_creator	3.6.1	cpe:2.3:a:microchip:mplab_network_creator:3.6.1:::::::*

References

www.cisa.gov/news-events/ics-advisories/icsa-21-042-01

www.forescout.com

www.forescout.com/resources/numberjack-weak-isn-generation-in-embedded-tcpip-stacks/

CVSS3

9.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

NONE

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

AI Score

9.1

Confidence

High

EPSS

0.001

Percentile

31.5%

JSON

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