CVE-2020-24587 Information

Description

The 802.11 standard that underpins Wi-Fi Protected Access (WPA WPA2 and WPA3) and Wired Equivalent Privacy (WEP) doesn’t require that all fragments of a frame are encrypted under the same key. An adversary can abuse this to decrypt selected fragments when another device sends fragmented frames and the WEP CCMP or GCMP encryption key is periodically renewed.

CVSS Vector

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

Reference

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

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

2.6