CVE-2020-26143: Input Validation
First published: Tue May 11 2021(Updated: )
A vulnerability was found in Linux kernel, where the WiFi implementations assemble 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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-348.rt7.130.el8 | 0:4.18.0-348.rt7.130.el8 |
| redhat/kernel | <0:4.18.0-348.el8 | 0:4.18.0-348.el8 |
| Alfa Awus036h Firmware Windows 10 | =1030.36.604 | |
| Alfa Awus036h | ||
| Arista C-75 Firmware | ||
| Arista C-75 | ||
| Arista O-90 Firmware | ||
| Arista O-90 | ||
| Arista C-65 Firmware | ||
| Arista C-65 | ||
| Arista W-68 Firmware | ||
| Arista W-68 | ||
| Siemens Scalance W700 Ieee 802.11n Firmware | ||
| Siemens SCALANCE W700 IEEE 802.11n |
Remedy
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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Reference Links
- http://www.openwall.com/lists/oss-security/2021/05/11/12
- https://cert-portal.siemens.com/productcert/pdf/ssa-913875.pdf
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.md
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWu
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63
- https://www.fragattacks.com
- https://lore.kernel.org/linux-wireless/20210511180259.159598-1-johannes@sipsolutions.net/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1960497
- https://access.redhat.com/errata/RHSA-2021:4140
- https://access.redhat.com/errata/RHSA-2021:4356
- https://access.redhat.com/security/cve/cve-2020-26143
- https://bugzilla.redhat.com/show_bug.cgi?id=1960496
- https://www.cve.org/CVERecord?id=CVE-2020-26143 https://nvd.nist.gov/vuln/detail/CVE-2020-26143
Frequently Asked Questions
What is the vulnerability ID of this issue?
The vulnerability ID for this issue is CVE-2020-26143.
What is the severity level of CVE-2020-26143?
CVE-2020-26143 has a severity level of 6.5 (Medium).
Which software packages are affected by CVE-2020-26143?
The affected software packages include kernel-rt, kernel, and AWUS036H firmware version 1030.36.604.
How can CVE-2020-26143 be exploited?
CVE-2020-26143 can be exploited to inject packets and/or exfiltrate selected fragments through fragmented frames in WiFi implementations.
Are there any references for CVE-2020-26143?
Yes, you can find references for CVE-2020-26143 at the following links: [reference 1](https://lore.kernel.org/linux-wireless/20210511180259.159598-1-johannes@sipsolutions.net/), [reference 2](https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1960497), [reference 3](https://access.redhat.com/errata/RHSA-2021:4140).
- collector/redhat-cve
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- agent/first-publish-date
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2020-26143
- agent/last-modified-date
- agent/remedy
- agent/references
- agent/weakness
- agent/event
- agent/author
- agent/severity
- agent/description
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- package-manager/redhat
- vendor/alfa
- canonical/alfa awus036h firmware windows 10
- version/alfa awus036h firmware windows 10/1030.36.604
- canonical/alfa awus036h
- vendor/arista
- canonical/arista c-75 firmware
- canonical/arista c-75
- canonical/arista o-90 firmware
- canonical/arista o-90
- canonical/arista c-65 firmware
- canonical/arista c-65
- canonical/arista w-68 firmware
- canonical/arista w-68
- vendor/siemens
- canonical/siemens scalance w700 ieee 802.11n firmware
- canonical/siemens scalance w700 ieee 802.11n