CVE-2020-26147

 

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

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

Total changes: - 8

Description

An issue was discovered in the Linux kernel 5.8.9. The WEP, WPA, WPA2, and WPA3 implementations reassemble fragments even though some of them were sent in plaintext. This vulnerability can be abused to inject packets and/or exfiltrate selected fragments when another device sends fragmented frames and the WEP, CCMP, or GCMP data-confidentiality protocol is used.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:H/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, Patch, 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
• https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
• 20210511 Multiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 2021-Third Party Advisory
• https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63

 

Keywords

NVD

 

CVE-2020-26147

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures