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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-24588
Reference (s):
- CISCO:20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021
- URL: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
- https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
- https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md