and how the monkeysphere can help you reduce these threat vectors:
threat model reduction diagrams.
-Determine how openssh handles multiple processes writing to
- known_hosts/authorized_keys files (lockfile, atomic appends?)
-
Handle unverified monkeysphere hosts in such a way that they're not
always removed from known_hosts file. Ask user to lsign the host
key?
-Handle multiple hostnames (multiple user IDs?) when generating host
- keys with gen-key.
-
-Work out the details (and describe a full use case) for assigning a
- REVOKER during monkeysphere-server gen_key -- how is this set? How
- do we export it so it's available when a second-party revocation is
- needed?
-
-Actually enable server hostkey publication.
-
-Streamline host key generation, publication, verification. See
- doc/george/host-key-publication for what dkg went through on
- 2008-06-19
-
-Ensure that authorized_user_ids are under as tight control as ssh
- expects from authorized_keys: we don't want monkeysphere to be a
- weak link in the filesystem.
-
-What happens when a user account has no corresponding
- /etc/monkeysphere/authorized_user_ids/$USER file? What gets placed
- in /var/cache/monkeysphere/authorized_keys/$USER? It looks
- currently untouched, which could mean bad things for such a user.
- - if authorized_user_ids is empty, then the user's authorized_keys
- file will be also, unless the user-controlled authorized_keys file
- is added. I believe this is expected, correct behavior.
-
-Consider the default permissions for
- /var/cache/monkeysphere/authorized_keys/* (and indeed the whole
- directory path leading up to that)
-
-As an administrator, how do i reverse the effect of a
- "monkeysphere-server trust-keys" that i later decide i should not
- have run?
-
-Make sure alternate ports are handled for known_hosts.
-
-Script to import private key into ssh agent.
-
-Provide a friendly interactive UI for marginal or failing client-side
- hostkey verifications. Handle the common cases smoothly, and
- provide good debugging info for the unusual cases.
-
-Make sure onak properly escapes user IDs with colons in them.
-
-Build a decent, presentable web site for documentation, evangelism,
- etc. Include a mention of how to report trouble or concerns.
-
-Create ssh2openpgp or convert to full-fledged keytrans.
-
Resolve the bugs listed in openpgp2ssh(1):BUGS.
-Understand and document alternate trustdb models.
-
Understand and document the output of gpg --check-trustdb:
gpg: 3 marginal(s) needed, 1 complete(s) needed, PGP trust model
gpg: depth: 0 valid: 2 signed: 20 trust: 0-, 0q, 0n, 0m, 0f, 2u
Fix the order of questions when user does a tsign in gpg or gpg2.
-File bug against ssh-keygen about how "-R" option removes comments
- from known_hosts file.
-
-File bug against ssh-keygen to see if we can get it to write to hash a
- known_hosts file to/from stdout/stdin.
-
-Add environment variables sections to man pages.
-
-Environment variable scoping.
-
-Move environment variable precedence before conf file.
-
When using ssh-proxycommand, if only host keys found are expired or
revoked, then output loud warning with prompt, or fail hard.
-Update monkeysphere-ssh-proxycommand man page with new keyserver
- checking policy info.
-
-Update monkeysphere-ssh-proxycommand man page with info about
- no-connect option.
-
-File bug against seahorse about how, when creating new primary keys,
- it presents option for "RSA (sign only)" but then creates an "esca"
- key.
-
File bug against enigmail about lack of ability to create subkeys.
-Priviledge separation: monkeysphere user to handle authn keyring and
- generate authorized_keys file (which would be moved into place by
- root). Host keyring would be owned by root.
+Test and document what happens when any filesystem that the
+ monkeysphere-server relies on and modifies (/tmp, /etc, and /var?)
+ fills up.
-Check permissions of authorized_user_ids file to be writable only by
- user and root (same as authorized_keys)
+Optimize keyserver access, particularly on monkeysphere-server
+ update-users -- is there a way to query the keyserver all in a
+ chunk?
-Improve function that sets owner trust for keys in server keychain.
+Think about packaging monkeysphere for other (non-apt-based) operating
+ systems. RPM-based linux systems, FreeBSD ports, and Mac OS X seem
+ like the most likely candidates.
projects / monkeysphere.git / blobdiff