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Message #11586
[Bug 1668093] Re: ssh-keygen -H corrupts already hashed entries
Thanks - I'll cherry-pick that into Debian, so zesty will get the fix.
I'd appreciate somebody else handling SRUs, though.
** Bug watch added: Debian Bug tracker #851734
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851734
** Changed in: openssh (Debian)
Importance: Undecided => Unknown
** Changed in: openssh (Debian)
Status: New => Unknown
** Changed in: openssh (Debian)
Remote watch: None => Debian Bug tracker #851734
** Also affects: openssh (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: openssh (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Changed in: openssh (Ubuntu)
Importance: Medium => High
** Changed in: openssh (Ubuntu Xenial)
Status: New => Triaged
** Changed in: openssh (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: openssh (Ubuntu Yakkety)
Status: New => Triaged
** Changed in: openssh (Ubuntu Yakkety)
Importance: Undecided => High
** Changed in: openssh (Ubuntu)
Status: Triaged => Fix Committed
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https://bugs.launchpad.net/bugs/1668093
Title:
ssh-keygen -H corrupts already hashed entries
Status in openssh package in Ubuntu:
Fix Committed
Status in openssh source package in Xenial:
Triaged
Status in openssh source package in Yakkety:
Triaged
Status in openssh package in Debian:
Unknown
Bug description:
xenial @ 1:7.2p2-4ubuntu2.1 on amd64 has this bug. trusty @
1:6.6p1-2ubuntu2.8 on amd64 does not have this bug. I have not tested
any other ssh versions.
The following should reproduce the issue:
#ssh-keyscan XXXX > ~/.ssh/known_hosts
# ssh root@XXXXX
Permission denied (publickey).
# ssh-keygen -H
/root/.ssh/known_hosts updated.
Original contents retained as /root/.ssh/known_hosts.old
WARNING: /root/.ssh/known_hosts.old contains unhashed entries
Delete this file to ensure privacy of hostnames
# ssh root@XXXXXX
Permission denied (publickey).
# ssh-keygen -H
/root/.ssh/known_hosts updated.
Original contents retained as /root/.ssh/known_hosts.old
WARNING: /root/.ssh/known_hosts.old contains unhashed entries
Delete this file to ensure privacy of hostnames
# ssh root@XXXXX
The authenticity of host 'XXXXXX' can't be established.
RSA key fingerprint is XXXXXX.
Are you sure you want to continue connecting (yes/no)?
# diff known_hosts.old known_hosts
1c1
< |1|BoAbRpUE3F5AzyprJcbjdepeDh8=|x/1AcaLxh45FlShmVQnlgx2qjxY= XXXXX
---
> |1|nTPsoLxCugQyZi3pqOa2pc/cX64=|bUH5qwZlZPp8msMGHdLtslf3Huk= XXXXX
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