Mailing List Archive

[Bug 1979] New: Enhancement patch: Restrict sftp-server to basic commands, by user or group
https://bugzilla.mindrot.org/show_bug.cgi?id=1979

Bug #: 1979
Summary: Enhancement patch: Restrict sftp-server to basic
commands, by user or group
Classification: Unclassified
Product: Portable OpenSSH
Version: 5.9p1
Platform: All
OS/Version: All
Status: NEW
Severity: enhancement
Priority: P2
Component: sftp-server
AssignedTo: unassigned-bugs@mindrot.org
ReportedBy: jdmossh@nand.net


Created attachment 2128
--> https://bugzilla.mindrot.org/attachment.cgi?id=2128
Patch versus 5.9p1

This patch adds the ability to restrict an sftp-server user to just
basic commands such as get, put, readdir, and readlink, and prohibit
mkdir, rmdir, rename, symlink, setstat and their equivalents.

It comes with an sshd_config option (RestrictSFtpSysToBasics) which can
be global or in a Match block.

I've found it helpful, and that request occasionally comes up on the
openssh-unix-dev list.

Please give feedback and consider it for inclusion. Patches are
attached against both 5.9p1 and openbsd's 5.9.

A more advanced enhancement might let the server admin specify which
commands to permit/deny; I think this is a good start.

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