CVE-2020-24588 Information

Description

The 802.11 standard that underpins Wi-Fi Protected Access (WPA WPA2 and WPA3) and Wired Equivalent Privacy (WEP) doesn’t require that the A-MSDU flag in the plaintext QoS header field is authenticated. Against devices that support receiving non-SSP A-MSDU frames (which is mandatory as part of 802.11n) an adversary can abuse this to inject arbitrary network packets.

CVSS Vector

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

Reference

https://www.fragattacks.com https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md http://www.openwall.com/lists/oss-security/2021/05/11/12 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.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

3.5