1.1.6: PAP and MySQL-stored NT-Password don't work

[Stefan Winter]

Hi,

I try to get rid of cleartext passwords stored in a MySQL db, and replace them 
by NT hashes. I set up a test environment and first tried with an entry in 
users:

swinter	NT-Password := "...", Auth-Type := Accept

which worked okay.

Storing the same password in MySQL did NOT work, with a quite spurious error, 
see below:

Nothing to do.  Sleeping until we see a request.
rad_recv: Access-Request packet from host 127.0.0.1:52635, id=148, length=59
        User-Name = "swinter"
        User-Password = "test"
        NAS-IP-Address = 255.255.255.255
        NAS-Port = 1234
  Processing the authorize section of radiusd.conf
modcall: entering group authorize for request 1
  modcall[authorize]: module "preprocess" returns ok for request 1
  modcall[authorize]: module "chap" returns noop for request 1
  modcall[authorize]: module "mschap" returns noop for request 1
    rlm_realm: No '@' in User-Name = "swinter", looking up realm NULL
    rlm_realm: No such realm "NULL"
  modcall[authorize]: module "suffix" returns noop for request 1
  rlm_eap: No EAP-Message, not doing EAP
  modcall[authorize]: module "eap" returns noop for request 1
  modcall[authorize]: module "files" returns notfound for request 1
radius_xlat:  'swinter'
rlm_sql (sql): sql_set_user escaped user --> 'swinter'
radius_xlat:  'SELECT id, UserName, Attribute, Value, op           FROM 
radcheck           WHERE Username = 'swinter'           ORDER BY id'
rlm_sql (sql): Reserving sql socket id: 3
radius_xlat:  'SELECT 
radgroupcheck.id,radgroupcheck.GroupName,radgroupcheck.Attribute,radgroupcheck.Value,radgroupcheck.op  
FROM radgroupcheck,usergroup WHERE usergroup.Username = 'swinter' AND 
usergroup.GroupName = radgroupcheck.GroupName ORDER BY radgroupcheck.id'
radius_xlat:  'SELECT id, UserName, Attribute, Value, op           FROM 
radreply           WHERE Username = 'swinter'           ORDER BY id'
radius_xlat:  'SELECT 
radgroupreply.id,radgroupreply.GroupName,radgroupreply.Attribute,radgroupreply.Value,radgroupreply.op  
FROM radgroupreply,usergroup WHERE usergroup.Username = 'swinter' AND 
usergroup.GroupName = radgroupreply.GroupName ORDER BY radgroupreply.id'
rlm_sql (sql): Released sql socket id: 3
  modcall[authorize]: module "sql" returns ok for request 1
rlm_pap: Normalizing NT-Password from hex encoding
  modcall[authorize]: module "pap" returns updated for request 1
modcall: leaving group authorize (returns updated) for request 1
  rad_check_password:  Found Auth-Type pap
auth: type "PAP"
  Processing the authenticate section of radiusd.conf
modcall: entering group PAP for request 1
rlm_pap: login attempt with password test
rlm_pap: Using NT encryption.
radius_xlat: Running registered xlat function of module mschap for 
string 'NT-Hash test'
  rlm_mschap: Unknown expansion string "NT-Hash test"
radius_xlat:  ''
rlm_pap: mschap xlat failed
rlm_pap: Passwords don't match
  modcall[authenticate]: module "pap" returns reject for request 1
modcall: leaving group PAP (returns reject) for request 1
auth: Failed to validate the user.
Delaying request 1 for 1 seconds
Finished request 1

Especially the lines

radius_xlat: Running registered xlat function of module mschap for 
string 'NT-Hash test'
  rlm_mschap: Unknown expansion string "NT-Hash test"
radius_xlat:  ''
rlm_pap: mschap xlat failed

appear suspicious ("test" is the password"). Maybe there's some xlat escaping 
wrong?
The configuration in use is almost as shipped, only added sql config.

Greetings,

Stefan Winter

-- 
Stefan WINTER

Stiftung RESTENA - Réseau Téléinformatique de l'Education Nationale et de 
la Recherche
Ingenieur Forschung & Entwicklung

6, rue Richard Coudenhove-Kalergi
L-1359 Luxembourg
E-Mail: stefan.winter at restena.lu     Tel.:     +352 424409-1
http://www.restena.lu                Fax:      +352 422473
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