Commit Graph

3 Commits

Author SHA1 Message Date
bagajjal a49bdce666
Port Unix bash tests (#410)
Leverage upstream test infrastructure to run against windows openssh binaries.
2019-12-09 15:12:46 -08:00
Manoj Ampalam af4e4113b2
Ported bash based E2E tests and integrated security fix for cve-2018-15473(#346)
- Updated code to dynamic load Lsa functions until RS5 SDK includes them
 - Add conpty support in openssh
- Fixed Wierd characters (?25l) are seen, when logged in from ssh client
- Backspace doesn't work in powershell window
- Changes to support ssh-shellhost as an alternative shell
- Added support to have ssh-shellhost work as a standby shell (ssh-shellhost -c "cmdline") simply executes cmdline via CreateProcess
- Added E2E test cases and fixed unittests broken from prior changes
- Added PTY launch interface that supports both conpty and ssh-shellhost pty.
- Implemented PTY control channel in ssh-shellhost that supports Window resize events.
- Fixed regression with starting a PTY session with an explicit command
- modified ssh-shellhost pty argument to ---pty to remove ambiguity in cases when both -p and -c are present in commandline. Ex. ssh-shellhost.exe -c "myprogram -p -c argument"
2018-10-04 14:16:02 -07:00
Manoj Ampalam 8bb672aa4d
Optimized group membership resolution (#327)
Current group membership resolution though very effective, is very slow. In a typical domain joined enterprise machine, adding a simple entry like the following in sshd_config
AllowGroups administrators
will incur a long delay in remote session establishment as sshd tried to pull all groups associated with the domain user.

Changes in this PR optimize the general case scenarios where no wild cards are in use. Specifically rules like this are processed promptly:

AllowGroups group1, group2, group3 //with no wild cards
Match Group group1 //single group with no negation and wild cards

Optimization is done by resolve the groupname in rule immediately to SID and checking its membership against user token. Enumerating the entire group membership is done on a lazy on-demand basis.

Beyond the optimization, there are 2 functional changes

- removed domain prefix for builtin groups
- removed domain prefix'ed versions of local groups since we are strictly following the convention that local principals shouldn't have any domain qualification.
2018-07-03 10:15:07 -07:00