Showing posts with label opends. Show all posts
Showing posts with label opends. Show all posts

20100928

User passwords may not be provided in pre-encoded form

One of the very first differences between the OpenDS and DSEE I have noticed
was the possibility of ldapmodifing the userPassword value. In OpenDS this feature is disabled by default.


$ ldapmodify -p 1389 -D cn=dirmgr -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: modify
replace: userpassword
userpassword: {SSHA512}1g9Byn7MOZ1TgZCNY8gw4NA6o8UguyYg0b48d89zJS+AyIs9OP2rHfbZ6aaqTluryTh3Ux1ZW5RSWuTjH9wvtBxFXCxJzyt0

Processing MODIFY request for cn=odsmgr,cn=Root DNs,cn=config
MODIFY operation failed
Result Code: 53 (Unwilling to Perform)
Additional Information: User passwords may not be provided in pre-encoded form

$ ldapsearch -p 1389 -D cn=dirmgr -j ~/.odspwd -b cn=config "cn=Default Password Policy" ds-cfg-allow-pre-encoded-passwords
dn: cn=Default Password Policy,cn=Password Policies,cn=config
ds-cfg-allow-pre-encoded-passwords: false

$ ldapsearch -p 1389 -D cn=dirmgr -j ~/.odspwd -b cn=config "cn=Root Password Policy" ds-cfg-allow-pre-encoded-passwords
dn: cn=Root Password Policy,cn=Password Policies,cn=config
ds-cfg-allow-pre-encoded-passwords: false


I do not know the pro and con voices in this discussion, but for me there is only one disadvantage - the ability to observe
multiple instances of the same encoded password strings. And it is only the risk when the one who would notice this fact is the bad guy.
In contrast I see only the advantages.
So...

dn: cn=Root Password Policy,cn=Password Policies,cn=config
changetype: modify
replace: ds-cfg-allow-pre-encoded-passwords
ds-cfg-allow-pre-encoded-passwords: true

LDIF has been implemented.

$ encode-password -s SSHA512 -f ~/.odspwd
Encoded Password: "{SSHA512}Gur7YkCGk4oP2sun+KqpXF4rB9wmzUgjhb3P6hBNmNRLBBQgTxSwLR5WuO41yytG9sUzslYc2HyUAM1otujRW+UkAOapbB7c"

$ ldapmodify -p 1389 -D cn=dirmgr -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: modify
replace: userpassword
userpassword: {SSHA512}Gur7YkCGk4oP2sun+KqpXF4rB9wmzUgjhb3P6hBNmNRLBBQgTxSwLR5WuO41yytG9sUzslYc2HyUAM1otujRW+UkAOapbB7c

Processing MODIFY request for cn=odsmgr,cn=Root DNs,cn=config
MODIFY operation successful for DN cn=odsmgr,cn=Root DNs,cn=config

$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.dspwd -b cn=config "cn=odsmgr" +
The simple bind attempt failed
Result Code: 49 (Invalid Credentials)
$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.odspwd -b cn=config "cn=odsmgr" +
dn: cn=odsmgr,cn=Root DNs,cn=config
modifiersName: cn=Directory Manager,cn=Root DNs,cn=config
modifyTimestamp: 20100927104857Z
createTimestamp: 20100924124513Z
pwdChangedTime: 20100927104857.435Z
creatorsName: cn=Directory Manager,cn=Root DNs,cn=config
entryDN: cn=odsmgr,cn=root dns,cn=config
entryUUID: 99296ddd-e705-468b-8112-afd19bb38821
hasSubordinates: false
subschemaSubentry: cn=schema
ds-pwp-password-policy-dn: cn=Root Password Policy,cn=Password Policies,cn=confi
g
structuralObjectClass: inetOrgPerson
numSubordinates: 0

20100926

Directory Managers. Lots of Directory Managers.

Last week I have decided to take some OpenDS practise. The practical solving of a problem is better
then hundreds lines of reading about the others activity. At least that's the way I feel.
Task: Multiple the Directory Manager account to delegate administration without providing your secret password.

In theory it is possible without any problems.
The only requirement is the object class of ds-cfg-root-dn-user.
I have copied almost the all attributes from the current "root" account into a new one.

$ ldapsearch -p 1389 -D cn=dirmgr -j ~/.odspwd -b cn=config "cn=Directory Manager"
dn: cn=Directory Manager,cn=Root DNs,cn=config
sn: Manager
ds-cfg-alternate-bind-dn: cn=dirmgr
cn: Directory Manager
givenName: Directory
objectClass: ds-cfg-root-dn-user
objectClass: top
objectClass: inetOrgPerson
objectClass: organizationalPerson
objectClass: person
userpassword: {SSHA512}1g9Byn7MOZ1TgZCNY8gw4NA6o8UguyYg0b48d89zJS+AyIs9OP2rHfbZ6
aaqTluryTh3Ux1ZW5RSWuTjH9wvtBxFXCxJzyt0


$ ldapmodify -p 1389 -D cn=dirmgr -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: add
objectClass: ds-cfg-root-dn-user
objectClass: top
objectClass: inetOrgPerson
objectClass: organizationalPerson
objectClass: person
cn: odsmgr
givenName: ODS
sn: Manager
userPAssword: secret

Processing ADD request for cn=odsmgr,cn=Root DNs,cn=config
ADD operation successful for DN cn=odsmgr,cn=Root DNs,cn=config

For the initial testing I have duplicated also the password.

$ ldappasswordmodify -p 1389 -D "cn=dirmgr" -j ~/.odspwd \
> -a "dn:cn=odsmgr,cn=Root DNs,cn=config" -c secret -N ~/.odspwd
The LDAP password modify operation was successful


During the cut'n'copy session of ldapmodify I have omitted ds-cfg-alternate-bind-dn intentionally.
I thought the adjective "alternate" is self-explanatory.
Wrong!

$ ldapsearch -p 1389 -D cn=odsmgr -j ~/.odspwd -b cn=config cn=odsmgr
The simple bind attempt failed
Result Code: 49 (Invalid Credentials)

$ ldapmodify -p 1389 -D "cn=dirmgr" -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: modify
add: ds-cfg-alternate-bind-dn
ds-cfg-alternate-bind-dn: cn=odsmgr

Processing MODIFY request for cn=odsmgr,cn=Root DNs,cn=config
MODIFY operation successful for DN cn=odsmgr,cn=Root DNs,cn=config

$ ldapsearch -p 1389 -D cn=odsmgr -j ~/.odspwd -b cn=config cn=odsmgr
dn: cn=odsmgr,cn=Root DNs,cn=config
sn: Manager
ds-cfg-alternate-bind-dn: cn=odsmgr
cn: odsmgr
givenName: ODS
objectClass: top
objectClass: ds-cfg-root-dn-user
objectClass: organizationalPerson
objectClass: inetOrgPerson
objectClass: person
userPassword: {SSHA}gF7nQ6N6gmpuufM1/8FemlwH1/HikScaVOlP3Q==

Why not to test a case with multiple ds-cfg-alternate-bind-dn attibute values.

$ ldapmodify -p 1389 -D "cn=dirmgr" -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: modify
add: ds-cfg-alternate-bind-dn
ds-cfg-alternate-bind-dn: cn=dsmgr

Processing MODIFY request for cn=odsmgr,cn=Root DNs,cn=config
MODIFY operation successful for DN cn=odsmgr,cn=Root DNs,cn=config

$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.odspwd -b cn=config cn=odsmgr
dn: cn=odsmgr,cn=Root DNs,cn=config
ds-cfg-alternate-bind-dn: cn=odsmgr
ds-cfg-alternate-bind-dn: cn=dsmgr
sn: Manager
cn: odsmgr
givenName: ODS
objectClass: ds-cfg-root-dn-user
objectClass: top
objectClass: inetOrgPerson
objectClass: organizationalPerson
objectClass: person
userPassword: {SSHA}gF7nQ6N6gmpuufM1/8FemlwH1/HikScaVOlP3Q==

But wait a minute. Why the userPassword value is encoded with a SSHA password scheme, while
the Directory Manager and the default root scheme is pointing to SSHA512.

$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.odspwd -b cn=config cn="Directory Manager" userpassword
dn: cn=Directory Manager,cn=Root DNs,cn=config
userpassword: {SSHA512}1g9Byn7MOZ1TgZCNY8gw4NA6o8UguyYg0b48d89zJS+AyIs9OP2rHfbZ6
aaqTluryTh3Ux1ZW5RSWuTjH9wvtBxFXCxJzyt0

$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.dspwd -b cn=config "cn=Root Password Policy" \
> ds-cfg-default-password-storage-scheme
dn: cn=Root Password Policy,cn=Password Policies,cn=config
ds-cfg-default-password-storage-scheme: cn=Salted SHA-512,cn=Password Storage Sc
hemes,cn=config

The answer has come with the hint from Ludovic Poitou.
The virtual attribute of ds-pwp-password-policy-dn should be set explicitly.

$ ldapmodify -p 1389 -D cn=dsmgr -j ~/.odspwd
dn: cn=odsmgr,cn=Root DNs,cn=config
changetype: modify
add: ds-pwp-password-policy-dn
ds-pwp-password-policy-dn: cn=Root Password Policy,cn=Password Policies,cn=config

Processing MODIFY request for cn=odsmgr,cn=Root DNs,cn=config
MODIFY operation successful for DN cn=odsmgr,cn=Root DNs,cn=config

$ openssl rand -base64 12 > ~/.dspwd

$ ldappasswordmodify -p 1389 -D cn=dsmgr -j ~/.odspwd -a "cn=odsmgr,cn=Root DNs,cn=config" \
> -C ~/.odspwd -N ~/.dspwd
The LDAP password modify operation was successful

$ ldapsearch -p 1389 -D cn=dsmgr -j ~/.dspwd -b cn=config cn=odsmgr userpassword
dn: cn=odsmgr,cn=Root DNs,cn=config
userpassword: {SSHA512}BxvZzrhuVpwOv6FMc9sI1infjPC7PQ0dXXdry4ZLNgq6FJbjCVfSiLwBO
A1uzaXAscS7pkNbfkP4hG11L9DTPsRfpusta+4x

Nice.