CVE-2020-26141

An issue was discovered in the ALFA Windows 10 driver 6.1316.1209 for AWUS036H. The Wi-Fi implementation does not verify the Message Integrity Check (authenticity) of fragmented TKIP frames. An adversary can abuse this to inject and possibly decrypt packets in WPA or WPA2 networks that support the TKIP data-confidentiality protocol.

Weakness

The product does not validate or incorrectly validates the integrity check values or “checksums” of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission.

Affected Software

Potential Mitigations

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/145.html
• https://cwe.mitre.org/data/definitions/463.html
• https://cwe.mitre.org/data/definitions/75.html

References

• http://www.openwall.com/lists/oss-security/2021/05/11/12
• https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
• https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
• 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://www.fragattacks.com