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providers/ldap: fix inconsistent saving of user flags on failed cached binds (#6096) 

* feat: assign invalid pk and check

* fix: only set flags if they don't exist

* fix: userinfo not being set if data is available

* minor cleanup

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>
Co-authored-by: Jens Langhammer <jens@goauthentik.io>
This commit is contained in:
Daniel 2023-06-29 16:57:11 +02:00 committed by Jens Langhammer
parent 04d0bd7fb7
commit ad81ee2740
No known key found for this signature in database
3 changed files with 25 additions and 15 deletions
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7
internal/outpost/ldap/bind/direct/bind.go
View File

@ -36,8 +36,15 @@ func (db *DirectBinder) Bind(username string, req *bind.Request) (ldap.LDAPResul
passed, err := fe.Execute()
flags := flags.UserFlags{
Session: fe.GetSession(),
UserPk: flags.InvalidUserPK,
}
// only set flags if we don't have flags for this DN yet
// as flags are only checked during the bind, we can remember whether a certain DN
// can search or not, as if they bind correctly first and then use incorrect credentials
// later, they won't get past this step anyways
if db.si.GetFlags(req.BindDN) == nil {
db.si.SetFlags(req.BindDN, &flags)
}
if err != nil {
metrics.RequestsRejected.With(prometheus.Labels{
"outpost_name": db.si.GetOutpostName(),

2
internal/outpost/ldap/flags/flags.go
View File

@ -6,6 +6,8 @@ import (
"goauthentik.io/api/v3"
)
const InvalidUserPK = -1
type UserFlags struct {
UserInfo *api.User
UserPk int32

29
internal/outpost/ldap/search/memory/memory.go
View File

@ -12,6 +12,7 @@ import (
log "github.com/sirupsen/logrus"
"goauthentik.io/api/v3"
"goauthentik.io/internal/outpost/ldap/constants"
"goauthentik.io/internal/outpost/ldap/flags"
"goauthentik.io/internal/outpost/ldap/group"
"goauthentik.io/internal/outpost/ldap/metrics"
"goauthentik.io/internal/outpost/ldap/search"
@ -73,8 +74,8 @@ func (ms *MemorySearcher) Search(req *search.Request) (ldap.ServerSearchResult,
return ldap.ServerSearchResult{ResultCode: ldap.LDAPResultInsufficientAccessRights}, fmt.Errorf("Search Error: BindDN %s not in our BaseDN %s", req.BindDN, ms.si.GetBaseDN())
}
flags := ms.si.GetFlags(req.BindDN)
if flags == nil {
flag := ms.si.GetFlags(req.BindDN)
if flag == nil || (flag.UserInfo == nil && flag.UserPk == flags.InvalidUserPK) {
req.Log().Debug("User info not cached")
metrics.RequestsRejected.With(prometheus.Labels{
"outpost_name": ms.si.GetOutpostName(),
@ -108,23 +109,23 @@ func (ms *MemorySearcher) Search(req *search.Request) (ldap.ServerSearchResult,
var err error
if needUsers {
if flags.CanSearch {
if flag.CanSearch {
users = &ms.users
} else {
u := make([]api.User, 1)
if flags.UserInfo == nil {
if flag.UserInfo == nil {
for i, u := range ms.users {
if u.Pk == flags.UserPk {
flags.UserInfo = &ms.users[i]
if u.Pk == flag.UserPk {
flag.UserInfo = &ms.users[i]
}
}
if flags.UserInfo == nil {
req.Log().WithField("pk", flags.UserPk).Warning("User with pk is not in local cache")
if flag.UserInfo == nil {
req.Log().WithField("pk", flag.UserPk).Warning("User with pk is not in local cache")
err = fmt.Errorf("failed to get userinfo")
}
} else {
u[0] = *flags.UserInfo
}
if flag.UserInfo != nil {
u[0] = *flag.UserInfo
}
users = &u
}
@ -134,17 +135,17 @@ func (ms *MemorySearcher) Search(req *search.Request) (ldap.ServerSearchResult,
groups = make([]*group.LDAPGroup, 0)
for _, g := range ms.groups {
if flags.CanSearch {
if flag.CanSearch {
groups = append(groups, group.FromAPIGroup(g, ms.si))
} else {
// If the user cannot search, we're going to only return
// the groups they're in _and_ only return themselves
// as a member.
for _, u := range g.UsersObj {
if flags.UserPk == u.Pk {
if flag.UserPk == u.Pk {
//TODO: Is there a better way to clone this object?
fg := api.NewGroup(g.Pk, g.NumPk, g.Name, g.ParentName, []api.GroupMember{u})
fg.SetUsers([]int32{flags.UserPk})
fg.SetUsers([]int32{flag.UserPk})
if g.Parent.IsSet() {
fg.SetParent(*g.Parent.Get())
}