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Re: CVE-2013-2132 MongoDB: User-triggerable NULL pointer dereference due to utter plebbery
From: Kurt Seifried <kseifried () redhat com>
Date: Fri, 31 May 2013 21:15:28 -0600

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To be clear this is in the mongo-python-driver aka pymongo, not in
MongoDB itself (but under the umbrella of MongoDB, I should have been
more clear the first time).

On 05/31/2013 01:10 PM, Kurt Seifried wrote:
https://jira.mongodb.org/browse/PYTHON-532

Short summary:

Step 1. Use Mongo as WEB SCALE DOCUMENT STORE OF CHOICE LOL Step 2.
Assume basic engineering principles applied throughout due to HEAVY
MARKETING SUGGESTING AWESOMENESS. Step 3. Spend 6 months fighting
plebbery across the spectrum, mostly succeed. Step 4. NIGHT BEFORE
INVESTOR DEMO, TRY UPLOADING SOME DATA WITH "{$ref:
'#/mongodb/plebtastic'" Step 5. LOL WTF?!?!? PYMONGO CRASH?? :OOO
LOOOL WEBSCALE Step 6. It's 4am now. STILL INVESTIGATING b4cb9be0
pymongo/_cbsonmodule.c (Mike Dirolf 2009-11-10 14:54:39 -0500 1196)
/* Decoding for DBRefs */ Oh Mike!!!


3. ADD process_dbrefs=False TO ALL THE DRIVERS

To reproduce: ? in mongo shell: db.python532.insert({x : {"$ref" :
"whatever"} }); ? in python shell import pymongo 
pymongo.MongoClient().test.python532.find_one()

Fix: 
https://github.com/mongodb/mongo-python-driver/commit/a060c15ef87e0f0e72974c7c0e57fe811bbd06a2

 BTW can someone from 10gen contact me so we can start doing the
CVEs for MongoDB properly? Thanks.



- -- 
Kurt Seifried Red Hat Security Response Team (SRT)
PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993
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