CVE-2020-26139

An issue was discovered in the kernel in NetBSD 7.1. An Access Point (AP) forwards EAPOL frames to other clients even though the sender has not yet successfully authenticated to the AP. This might be abused in projected Wi-Fi networks to launch denial-of-service attacks against connected clients and makes it easier to exploit other vulnerabilities in connected clients.

CVSS v3.0 5.3 MEDIUM
CVSS v2.0 2.9 LOW

5.3^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

2.9^/10

CVSS v2.0 : LOW

Vector : AV:A/AC:M/Au:N/C:N/I:N/A:P

Exploitability : 5.5 / Impact : 2.9

Access Vector ADJACENT_NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://www.fragattacks.com	Third Party Advisory
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md	Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/05/11/12	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63

Configurations

Configuration 1 (hide)

cpe:2.3:o:netbsd:netbsd:7.1:*:*:*:*:*:*:*

Information

Published : 2021-05-11 20:15

Updated : 2021-10-28 15:15

NVD link : CVE-2020-26139

Mitre link : CVE-2020-26139

JSON object : View

Products Affected

netbsd

netbsd

CWE

CWE-287

Improper Authentication

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