openssh bugs - Dec 2008 - [Bug 1545] New: ssh-keygen -R removes all comments from known_hosts file

https://bugzilla.mindrot.org/show_bug.cgi?id=1545

           Summary: ssh-keygen -R removes all comments from known_hosts
                    file
           Product: Portable OpenSSH
           Version: 5.1p1
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ssh-keygen
        AssignedTo: unassigned-bugs at mindrot.org
        ReportedBy: ssh-bugzilla at finestructure.net


ssh-keygen -R is currently removing *all* comments from the known_hosts
file it's processing.  Below is an example of ssh-keygen -R being run
on a test known_host file.  An attachment is included that demonstrates
the problem in action.

Notice that the first invocation is to remove example1.server.net from
the
file, but the comment on example2.server.net is removed in the
process as well.  The same problem occurs when nothing no host is
removed from the file at all.

In both cases an attempt was made to remove a host *other* than
example2.server.net, but the net result was that *all* comments where
removed from the file.

Thanks for the help.

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--- Comment #1 from Jameson Rollins <ssh-bugzilla at finestructure.net> 
2008-12-19 04:00:10 ---
Created an attachment (id=1589)
 --> (http://bugzilla.mindrot.org/attachment.cgi?id=1589)
example output of ssh-keygen -R that removes all comments

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Jameson Rollins <ssh-bugzilla at finestructure.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ssh-bugzilla at finestructure.
                   |                            |net




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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org




--- Comment #2 from Damien Miller <djm at mindrot.org>  2009-01-21
21:54:57 ---
See also bug #1544

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1708

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--- Comment #3 from Damien Miller <djm at mindrot.org>  ---
We are freezing for the OpenSSH 5.6 release. Retargetting these bugs to
the next release.

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1803

--- Comment #4 from Damien Miller <djm at mindrot.org>  ---
Targetting OpenSSH 5.7

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|1708                        |

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|1803                        |

--- Comment #5 from Damien Miller <djm at mindrot.org> 2011-01-24 12:30:46
EST ---
Retarget unclosed bugs from 5.7=>5.8

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1845

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1930

--- Comment #6 from Damien Miller <djm at mindrot.org> 2011-09-06 10:34:10
EST ---
Retarget unresolved bugs/features to 6.0 release

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--- Comment #7 from Damien Miller <djm at mindrot.org> 2011-09-06 10:36:25
EST ---
Retarget unresolved bugs/features to 6.0 release

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|1845                        |

--- Comment #8 from Damien Miller <djm at mindrot.org> 2011-09-06 10:38:58
EST ---
Retarget unresolved bugs/features to 6.0 release

(try again - bugzilla's "change several" isn't)

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--- Comment #9 from Damien Miller <djm at mindrot.org> 2011-11-04 11:34:06
EST ---
Created attachment 2103
  --> https://bugzilla.mindrot.org/attachment.cgi?id=2103
bz1545.diff

retain comments in known_hosts when hashing/deleting entries

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |1986

--- Comment #10 from Damien Miller <djm at mindrot.org> 2012-02-24
10:34:18 EST ---
Retarget from 6.0 to 6.1

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Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|1930                        |

--- Comment #11 from Damien Miller <djm at mindrot.org> 2012-02-24
10:37:56 EST ---
Retarget 6.0 => 6.1

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