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MitreCVE-2021-38387

HistoryAug 10, 2021 - 7:15 p.m.

CVE-2021-38387

2021-08-1019:15:07

CWE-835

mitre

web.nvd.nist.gov

contiki

telnet server

cve-2021-38387

nvd

security

cpu consumption

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

42.5%

JSON

In Contiki 3.0, a Telnet server that silently quits (before disconnection with clients) leads to connected clients entering an infinite loop and waiting forever, which may cause excessive CPU consumption.

Affected configurations

Nvd

Node

contiki-oscontikiMatch3.0

VendorProductVersionCPE
contiki-oscontiki3.0cpe:2.3:o:contiki-os:contiki:3.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
contiki-os	contiki	3.0	cpe:2.3:o:contiki-os:contiki:3.0:::::::*

References

github.com/contiki-os/contiki/issues/2688

Social References

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

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

AI Score

7.4

Confidence

High

EPSS

0.001

Percentile

42.5%

JSON

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