cve-2021-27862
Vulnerability from cvelistv5
Published
2022-09-27 18:40
Modified
2024-09-16 20:43
Severity ?
Summary
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion (and optionally VLAN0 headers).
References
cret@cert.orghttps://blog.champtar.fr/VLAN0_LLC_SNAP/
cret@cert.orghttps://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/Vendor Advisory
cret@cert.orghttps://kb.cert.org/vuls/id/855201
cret@cert.orghttps://standards.ieee.org/ieee/802.2/1048/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.champtar.fr/VLAN0_LLC_SNAP/
af854a3a-2127-422b-91ae-364da2661108https://datatracker.ietf.org/doc/draft-ietf-v6ops-ra-guard/08/Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://kb.cert.org/vuls/id/855201
af854a3a-2127-422b-91ae-364da2661108https://standards.ieee.org/ieee/802.2/1048/Vendor Advisory
Impacted products
Vendor Product Version
IEEE 802.2 Version: 802.2h-1997   <
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   IETF draft-ietf-v6ops-ra-guard-08 Version: 08   <
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         credits: [
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               lang: "en",
               value: "Etienne Champetier (@champtar) <champetier.etienne@gmail.com>",
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         source: {
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      datePublished: "2022-09-27T18:40:14.712076Z",
      dateReserved: "2021-03-01T00:00:00",
      dateUpdated: "2024-09-16T20:43:01.727Z",
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