CVE-2020-24587

 

Published at: - 11-05-2021 10:15

Last modified: - 26-10-2022 01:44

Total changes: - 7

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.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://www.fragattacks.com
• https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
• [oss-security] 20210511 various 802.11 security issues - fragattacks.com-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210623 [SECURITY] [DLA 2690-1] linux-4.19 security update-Mailing List, Third Party Advisory
• [debian-lts-announce] 20210623 [SECURITY] [DLA 2689-1] linux security update-Mailing List, Third Party Advisory
• 20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021-Third Party Advisory
• 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

 

Keywords

NVD

 

CVE-2020-24587

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures