[Bug 1606] internal-sftp does not drop conections properly, it will hang

bugzilla-daemon at bugzilla.mindrot.org bugzilla-daemon at bugzilla.mindrot.org
Fri Oct 23 12:19:32 EST 2009


https://bugzilla.mindrot.org/show_bug.cgi?id=1606

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
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   Attachment #1648|0                           |1
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--- Comment #2 from Damien Miller <djm at mindrot.org> 2009-10-23 12:19:31 EST ---
Created an attachment (id=1704)
 --> (https://bugzilla.mindrot.org/attachment.cgi?id=1704)
abort non-subsystem sessions to forced internal sftp-server

I think your proposed fix introduces a security vulnerability - a user
could upload a file "internal-sftp" and sshd would execute it, since
the SUBSYSTEM_INT_SFTP is no longer set when processing the session.

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