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CVE-2020-24588

3.5 · LOW

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 authenti…

Published May 11, 2021CWE-327EPSS 3.61%

Overview

CVE-2020-24588 is a low-severity vulnerability. It was published on May 11, 2021 and has a CVSS 3.1 base score of 3.5 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.openwall.com/lists/oss-security/2021/05/11/12Refcert-portal.siemens.com/productcert/pdf/ssa-913875.pdfGitHubgithub.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdReflists.debian.org/debian-lts-announce/2021/06/msg00019.htmlReflists.debian.org/debian-lts-announce/2021/06/msg00020.htmlReflists.debian.org/debian-lts-announce/2023/04/msg00002.htmlReftools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWuRefwww.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63Refwww.fragattacks.comRefwww.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html

How CyberStrike helps

Frequently asked questions

What is CVE-2020-24588?

CVE-2020-24588 is a low-severity vulnerability. It was published on May 11, 2021 and has a CVSS 3.1 base score of 3.5 (LOW).

How severe is CVE-2020-24588?

This vulnerability has a CVSS 3.1 base score of 3.5, rated LOW. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-24588?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-24588?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-24588 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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