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CVE-2020-24586

Date: May 10, 2021

The 802.11 standard that underpins Wi-Fi Protected Access (WPA, WPA2, and WPA3) and Wired Equivalent Privacy (WEP) doesn't require that received fragments be cleared from memory after (re)connecting to a network. Under the right circumstances, when another device sends fragmented frames encrypted using WEP, CCMP, or GCMP, this can be abused to inject arbitrary network packets and/or exfiltrate user data.

Severity Score

Related Resources (14)

https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
https://lists.debian.org/debian-lts-announce/2023/04/msg00002.html
https://www.fragattacks.com
http://www.openwall.com/lists/oss-security/2021/05/11/12
https://access.redhat.com/security/cve/CVE-2020-24586
https://lists.debian.org/debian-lts-announce/2021/06/msg00019.html
https://lists.debian.org/debian-lts-announce/2021/06/msg00020.html
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.intel.com/content/www/us/en/security-center/advisory/intel-sa-00473.html
https://nvd.nist.gov/vuln/detail/CVE-2020-24586
https://security-tracker.debian.org/tracker/CVE-2020-24586
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-24586
https://www.mend.io/vulnerability-database/CVE-2020-24586

Severity Score

CVSS v3.1

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

CVSS v2

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

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