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LDAP Auth broken by security groups with parenthesis in the name... #1163

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derek-shnosh opened this issue Dec 8, 2018 · 7 comments
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@derek-shnosh
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derek-shnosh commented Dec 8, 2018

Describe the bug
LDAP authentication seems to succeed, but throws an exception; i.e. a ldap_search(): Search: Bad search filter error is given, but if I simply browse back I am logged in and given admin privileges according to the External Authentication ID mapped to the role.

screenrecord

.env

I tried including a valid OU= for the LDAP_BASE_DN= setting, but experienced the same result.

# General auth
AUTH_METHOD=ldap

# LDAP Settings
LDAP_SERVER=dc.domain.com
LDAP_BASE_DN="DC=domain,DC=com"
LDAP_DN="CN=bookstack,OU=Service Accounts,DC=domain,DC=com"
LDAP_PASS="strong_password"
LDAP_USER_FILTER="(&(sAMAccountName=${user})(memberOf=CN=Docs_Login,OU=Security Groups,DC=domain,DC=com))"
LDAP_VERSION=3
# Do you want to sync LDAP groups to BookStack roles for a user
LDAP_USER_TO_GROUPS=true
# What is the LDAP attribute for group memberships
LDAP_GROUP_ATTRIBUTE="memberOf"
# Would you like to remove users from roles on BookStack if they do not match on LDAP
# If false, the ldap groups-roles sync will only add users to roles
LDAP_REMOVE_FROM_GROUPS=true

Steps To Reproduce
Login using AD credentials.

Expected behavior
User logs in and authenticates.

Screenshots
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Your Configuration (please complete the following information):

  • BookStack Version: 0.24.3
  • PHP Version: PHP 7.2.10-0ubuntu0.18.04.1 (cli) (built: Sep 13 2018 13:45:02) ( NTS )
  • Hosting Method (Nginx/Apache/Docker): Apache2 (2.4.29)
  • Windows 2008 R2 Domain Controller and functional level.

Additional context
Possibly related: #317

@derek-shnosh
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derek-shnosh commented Dec 8, 2018

I figured out what the issue was.

The account was part of some AD groups that had parenthesis in their names.

image

Apparently it was referencing that group as a search filter.

Since the user was part of the DOCS_LOGIN group, they were able to log in... but this bug breaks the LDAP group mappings; i.e. LDAP_USER_TO_GROUPS and LDAP_REMOVE_FROM_GROUPS.

@derek-shnosh derek-shnosh changed the title LDAP Auth says Bad Search Filter, but user is logged in... LDAP Auth broken by security groups with parenthesis in the name... Dec 8, 2018
@ssddanbrown ssddanbrown added this to the BookStack Beta v0.25.0 milestone Dec 8, 2018
@ssddanbrown
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Thanks for reporting and doing the investigation work and providing details @derek-shnosh, Really helpful stuff.
Have marked as a priority for the next release.

ssddanbrown added a commit that referenced this issue Dec 20, 2018
@ssddanbrown
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Added a fix in 26ec1cc, Will be in next release. Hoping that will be later this weekend.

@derek-shnosh
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Excellent!

@derek-shnosh
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@ssddanbrown - figured I'd ask here, is there a way to run from the master branch?

If I checkout the master branch and refresh the page, it's pretty broken. I'm guessing because public\dist doesn't exist as you mention here.

@ssddanbrown
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@derek-shnosh there is but you'll need a recent version of Node.JS installed and then following the build steps towards the top of this section in the readme.

Alternatively, since I've got the files open, here's a zip of built files from current master:
bookstack-dist-files-master.zip
Copy the files out of the zip to public/dist.

Just a warning, master can be a little unstable, Might be okay right now but I'd avoid updates and switch back to release when you can.

Next release is a little late, Now hoping to get it out before wednesday the 2nd.

@derek-shnosh
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Thanks for the reponse/input @ssddanbrown.

Try to enjoy the weekend and new year celebrations!

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