CVE-2020-26142
lowpriority · track · 22EPSS 0.021 · 81 %ileDEEURUUSEPSS · scored 2026-10-26
An issue was discovered in the kernel in OpenBSD 6.6. The WEP, WPA, WPA2, and WPA3 implementations treat fragmented frames as full frames. An adversary can abuse this to inject arbitrary network packets, independent of the network configuration.
remediations
Vendor fix, mitigation, or workaround guidance, as published by each source.
A vendor fix is available.
- FixedCisco IP Phones with Multiplatform Firmwarecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco TelePresence Endpoint Software (TC/CE)cisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedCisco Webex Room Phonecisco_csaf
Cisco has released software updates that address this vulnerability.
https://software.cisco.com - FixedTropOScisa_csaf_ot
Disable the Wi-Fi access on any TropOS unit where local Wi-Fi access is not required. This is achieved by NOT enabling (or disabling) the local access SSID.
- MitigationTropOScisa_csaf_ot
As the FragAttacks vulnerability is targeted at an end-user device and generally involves redirection to fraudulent websites, the installation of comprehensive firewall capabilities on company end-user devices and servers will significantly reduce the likelihood of negative outcomes.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 2.6–7.5
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (61)
Products and version ranges known to be affected.
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2022-2069IEEE 802.11 (WLAN): Mehrere SchwachstellenDeutsch2021-05-11csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in der IEEE 802.11 Spezifikation und zahlreichen Implementierungen ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Netzwerkverkehr zu manipulieren und um Informationen offenzulegen.
- cisco-sa-wifi-faf-22epcEWuMultiple Vulnerabilities in Frame Aggregation and Fragmentation Implementations of 802.11 Specification Affecting Cisco Products: May 20212021-05-11csaf · cisco_csafUS
On May 11, 2021, the research paper Fragment and Forge: Breaking Wi-Fi Through Frame Aggregation and Fragmentation was made public. This paper discusses 12 vulnerabilities in the 802.11 standard. One vulnerability is in the frame aggregation functionality, two vulnerabilities are in the frame fragmentation functionality, and the other nine are implementation vulnerabilities. These vulnerabilities could allow an attacker to forge encrypted frames, which could in turn enable the exfiltration of sensitive data from a targeted device. This advisory will be updated as additional information becomes available.
- ICSA-21-236-01Hitachi ABB Power Grids TropOS2021-08-24icsa · cisa_csaf_otUS
Successful exploitation of these vulnerabilities could allow an attacker to direct a client that is connected to a TropOS Wi-Fi access point to fake websites and extract sensitive data.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (26)
External citations — patches, advisories, analysis.
- http://www.openwall.com/lists/oss-security/2021/05/11/12cnnvd
- https://device.harmonyos.com/cn/docs/security/update/security-bulletins-phones-202107-0000001170634565cnnvd
- https://github.com/vanhoefm/fragattacks/blob/master/SUMMARY.mdcnnvd
- https://support.lenovo.com/us/en/product_security/LEN-61212cnnvd
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wifi-faf-22epcEWucnnvd
- https://us-cert.cisa.gov/ics/advisories/icsa-21-236-01cnnvd
- https://vigilance.fr/vulnerability/Wi-Fi-Devices-multiple-vulnerabilities-via-FragAttacks-35386cnnvd
- https://www.arista.com/en/support/advisories-notices/security-advisories/12602-security-advisory-63cnnvd
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