Bug 1959663 (CVE-2020-26139) - CVE-2020-26139 kernel: Forwarding EAPOL from unauthenticated wifi client
Summary: CVE-2020-26139 kernel: Forwarding EAPOL from unauthenticated wifi client
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-26139
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1978186 1960130 1960131 1960132 1960133
Blocks: 1959275
TreeView+ depends on / blocked
 
Reported: 2021-05-12 03:59 UTC by Wade Mealing
Modified: 2021-11-09 21:22 UTC (History)
43 users (show)

Fixed In Version: kernel 5.13 rc4
Doc Type: If docs needed, set a value
Doc Text:
Frames used for authentication and key management between the AP and connected clients. Some clients may take these redirected frames masquerading as control mechanisms from the AP.
Clone Of:
Environment:
Last Closed: 2021-11-09 21:22:15 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:4140 0 None None None 2021-11-09 17:22:44 UTC
Red Hat Product Errata RHSA-2021:4356 0 None None None 2021-11-09 18:25:49 UTC

Description Wade Mealing 2021-05-12 03:59:46 UTC 
A flaw was found in the Linux kernels wifi implementation.  An attacker connected to the wireless network can send 'authentication and key management' frames to any participant on the network.  These frames are only intended to be sent from the controlling access point however the kernel did not prevent retransmission of these packets from non-controlling nodes.

Upstream fix:
https://lore.kernel.org/linux-wireless/20210511200110.cb327ed0cabe.Ib7dcffa2a31f0913d660de65ba3c8aca75b1d10f@changeid/
Comment 4 Wade Mealing 2021-05-13 06:25:03 UTC 
Mitigation:

Mitigation for this issue is either not available or the currently available options does not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Comment 5 Wade Mealing 2021-05-13 06:28:55 UTC 
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1960130]
Comment 17 Justin M. Forbes 2021-06-29 16:17:54 UTC 
This was fixed for Fedora with the 5.12.9 stable kernel updates.
Comment 20 errata-xmlrpc 2021-11-09 17:22:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4140 https://access.redhat.com/errata/RHSA-2021:4140
Comment 21 errata-xmlrpc 2021-11-09 18:25:45 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:4356 https://access.redhat.com/errata/RHSA-2021:4356
Comment 22 Product Security DevOps Team 2021-11-09 21:22:11 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2020-26139
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