From: 3APA3A (3APA3ASECURITY.NNOV.RU)
Date: Wed Jan 03 2007 - 06:34:48 CST

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

Dear saphealhack.pl,

 Please correct me, if I wrong, but as far as I can see, 'server'
 parameter is taken from module configuration.

static CONF_PARSER module_config[] = {
  { "server", PW_TYPE_STRING_PTR, offsetof(rlm_smb_t,server), NULL, NULL},
  { "backup", PW_TYPE_STRING_PTR, offsetof(rlm_smb_t,backup), NULL, NULL},
  { "domain", PW_TYPE_STRING_PTR, offsetof(rlm_smb_t,domain), NULL, NULL},

  { NULL, -1, 0, NULL, NULL } /* end the list */
};

...

        rcode = Valid_User(request->username->strvalue,
                           request->password->strvalue,
                           data->server, data->backup, data->domain);

 That is, in order to "exploit" this vulnerability you must control
 FreeRADIUS configuration file. If you can control configuration file
 you can execute code in multiple ways, e.g. by specifying application
 to be executed on every request. That is, there is no security impact
 here.

--Tuesday, January 2, 2007, 3:10:50 PM, you wrote to bugtraqsecurityfocus.com:

shp> Synopsis:
shp> FreeRadius 1.1.3 SMB_Handle_Type SMB_Connect_Server arbitrary code execution

shp> Product: FreeRadius
shp> Version: <=1.1.3

shp> Issue:
shp> ======

shp> A critical security vulnerability has been found in FreeRadius 1.1.3.
shp> Arbitrary code execution is possible due to improper bounds-checking.

shp> Details:
shp> ========
shp> Function of the prototype:

shp> SMB_Handle_Type SMB_Connect_Server(SMB_Handle_Type Con_Handle,
shp> char *server, char *NTdomain)

shp> when initializing (con->desthost) where con is SMB_Handle_Type class
shp> object does not check for bounds.

shp> Affected Versions
shp> =================

shp> FreeRadius <=1.1.3

shp> Kind regards,

shp> Michal Bucko (sapheal)
shp> hack.pl

--
~/ZARAZA
Ïîêà âû âî âëàñòè ïðîâèäåíèÿ, âàì íå óäàñòñÿ óìåðåòü ðàíüøå ñðîêà. (Òâåí)

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]