[wp-trac] [WordPress Trac] #52409: Upload method SSH2 shouldn't use hardwired ssh-rsa hostkey

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Tue Mar 29 16:29:05 UTC 2022

#52409: Upload method SSH2 shouldn't use hardwired ssh-rsa hostkey
 Reporter:  richybkreckel   |       Owner:  SergeyBiryukov
     Type:  defect (bug)    |      Status:  closed
 Priority:  normal          |   Milestone:  5.9.3
Component:  Filesystem API  |     Version:
 Severity:  normal          |  Resolution:  fixed
 Keywords:  fixed-major     |     Focuses:
Changes (by audrasjb):

 * status:  reopened => closed
 * resolution:   => fixed


 In [changeset:"53022" 53022]:
 #!CommitTicketReference repository="" revision="53022"
 Filesystem API: Include the `ssh-ed25519` public key signature algorithm
 as an alternative to `ssh-rsa`.

 The `ssh-rsa` signature algorithm is disabled by default as of OpenSSH
 8.8, which breaks SSH2 uploads in WordPress on modern systems. `ssh-
 ed25519` is one of the suggested alternatives, supported since OpenSSH


 - OpenSSH 8.2 release notes
 - OpenSSH 8.7 release notes
 - OpenSSH 8.8 release notes

 Follow-up to [8865].

 Props richybkreckel, dd32, SergeyBiryukov.
 Merges [52807] to the 5.9 branch.
 Fixes #52409.

Ticket URL: <https://core.trac.wordpress.org/ticket/52409#comment:16>
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