Entreprise française de cybersécurité depuis 2004
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☎ 03 60 47 09 81 - info@securiteinfo.com
systemd 239 through 245 accepts any certificate signed by a trusted certificate authority for DNS Over TLS. Server Name Indication (SNI) is not sent, and there is no hostname validation with the GnuTLS backend. NOTE: This has been disputed by the developer as not a vulnerability since hostname validation does not have anything to do with this issue (i.e. there is no hostname to be sent)
- https://blog.cloudflare.com/dns-encryption-explained/
- https://github.com/systemd/systemd/issues/9397
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