CVE-2020-24586

low

Description

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.

References

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://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

Details

Source: MITRE

Published: 2021-05-11

Updated: 2021-12-03

Risk Information

CVSS v2

Base Score: 2.9

Vector: AV:A/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 5.5

Severity: LOW

CVSS v3

Base Score: 3.5

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

Impact Score: 1.4

Exploitability Score: 2.1

Severity: LOW