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CVE-2020-26142

Date: May 11, 2021

An issue was discovered in the kernel in OpenBSD 6.6. The WEP, WPA, WPA2, and WPA3 implementations treat fragmented frames as full frames. An adversary can abuse this to inject arbitrary network packets, independent of the network configuration.

Severity Score

Related Resources (9)

https://security-tracker.debian.org/tracker/CVE-2020-26142
https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
https://nvd.nist.gov/vuln/detail/CVE-2020-26142
https://www.fragattacks.com
http://www.openwall.com/lists/oss-security/2021/05/11/12
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
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-26142
https://www.mend.io/vulnerability-database/CVE-2020-26142

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-74

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): HIGH
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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