MISP
/
misp-rfc
mirror of https://github.com/MISP/misp-rfc
2
0
Fork 0
Code Issues Releases Wiki Activity

Change the generated document

pull/30/head
Sebastien Tricaud 2019-11-06 23:13:23 -08:00
parent 6187769b4d
commit 51c1230cd2
1 changed files with 103 additions and 47 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

150
sightingdb-format/raw.md.txt
View File

@ -68,11 +68,13 @@ Table of Contents
2.1.2. Namespace . . . . . . . . . . . . . . . . . . . . . . 3
2.1.3. Attribute fields . . . . . . . . . . . . . . . . . . 3
2.2. SightingDB Format - One Attribute . . . . . . . . . . . . 4
3. Value . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3.1. Configuring the value format for a Namespace . . . . . . 5
4. Security Considerations . . . . . . . . . . . . . . . . . . . 5
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 5
6. Normative References . . . . . . . . . . . . . . . . . . . . 6
2.3. Value . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.3.1. Configuring the value format for a Namespace . . . . 5
2.4. Bulk . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4.1. Response . . . . . . . . . . . . . . . . . . . . . . 6
3. Security Considerations . . . . . . . . . . . . . . . . . . . 6
4. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 6
5. Normative References . . . . . . . . . . . . . . . . . . . . 6
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 6
1. Introduction
@ -96,8 +98,7 @@ Table of Contents
The SightingDB format is in JSON [RFC8259] format and used to query a
SightingDB compatible connector. In SightingDB, a Sighting Object is
composed of a single JSON object. This object contains the following
fields: value, first_seen, last_seen, count, tags, ttl, frequency and
manifold.
fields: value, first_seen, last_seen, count, tags, ttl and manifold.
2.1.1. Attribute Storage
@ -108,7 +109,6 @@ Table of Contents
Tricaud Expires May 6, 2020 [Page 2]
Internet-Draft SightingDB query format November 2019
@ -124,19 +124,29 @@ Internet-Draft SightingDB query format November 2019
private and internal to SightingDB. There are all reserved for the
engine and MUST NOT be used.
Reserved namespaces are: _expired/: Which contains all the attributes
that expired, preserving the origin namespace _shadow/: When a value
is searched and does not exists, it is stored there _stats:
Statistics _config: Configuration _all: All the Attributes in one
place, used to retrieve the 'manifold' property.
Reserved namespaces are:
_expired/: Which contains all the attributes that expired, preserving
the origin namespace
_shadow/: When a value is searched and does not exists, it is stored
there
_stats: Statistics
_config: Configuration
_all: All the Attributes in one place, used to retrieve the
'manifold' property.
The Attribute Key MUST always be the last part of the Namespace.
2.1.2.1. Sample Namespaces
/Organization1/service/ipv4: Store values for ipv4 keys in
/Organization1/service /everything/domain: Store domains in
/everything
/Organization1/service
/everything/domain: Store domains in /everything
2.1.3. Attribute fields
@ -151,16 +161,6 @@ Internet-Draft SightingDB query format November 2019
The value implementation MUST offer at least: 1) Raw value 2) Base64
URL Encoded 3) SHA256 Hash
2.1.3.2. first_seen
Time in UTC of the first time this value was captured
2.1.3.3. last_seen
Time in UTC of the last time this value was captured
@ -170,6 +170,14 @@ Tricaud Expires May 6, 2020 [Page 3]
Internet-Draft SightingDB query format November 2019
2.1.3.2. first_seen
Time in UTC of the first time this value was captured
2.1.3.3. last_seen
Time in UTC of the last time this value was captured
2.1.3.4. count
How many time this value was written
@ -191,13 +199,7 @@ Internet-Draft SightingDB query format November 2019
When an Attribute has this field set to a number greater than 0, the
expiration status is computed only at retrieval time.
2.1.3.7. frequency
Frequency is the number of time an Attribute is seen in average per
day. As this field can introduced latence, its implementation is
OPTIONAL.
2.1.3.8. manifold
2.1.3.7. manifold
When a given Attribute Value is stored in different namespaces, the
manifold field keeps track of them so it returns in how many
@ -212,7 +214,6 @@ Internet-Draft SightingDB query format November 2019
"count":578391,
"tags":"",
"ttl":0,
"frequency":1185,
"manifold": 17
}
@ -220,13 +221,12 @@ Internet-Draft SightingDB query format November 2019
Tricaud Expires May 6, 2020 [Page 4]
Internet-Draft SightingDB query format November 2019
3. Value
2.3. Value
The value submitted can be in multiple format according to the use-
case. Any implementation MUST offer three alternatives:
@ -245,7 +245,7 @@ Internet-Draft SightingDB query format November 2019
The value is configured as part of the Namespace. The private
"_config" Namespace prefix stores this value storage mechanism.
3.1. Configuring the value format for a Namespace
2.3.1. Configuring the value format for a Namespace
If one has the Namespace "/Organization1/BU1/ip" and want to store
those IP addresses in SHA256, it will be configured like this: The
@ -258,7 +258,43 @@ Internet-Draft SightingDB query format November 2019
Where "value_format" is either: "SHA256", "RAW" or "BASE64URL".
4. Security Considerations
2.4. Bulk
When data must be sent and received in large amounts, it is
preferable to embed in JSON all the objects at once. As such, for
reading and writing, the format is the following:
{
"items": [
{ "/your/namespace": "127.0.0.1" },
{ "/your/other/namespace": "110812f67fa1e1f0117f6f3d70241c1a42a7b07711a93c2477cc516d9042f9db" }
]
}
Which will either store or retrieve the wanted data.
Tricaud Expires May 6, 2020 [Page 5]
Internet-Draft SightingDB query format November 2019
2.4.1. Response
The response when retrieving sightings also has the list of items, in
order, one per line of the results:
{
"items": [
{ "first_seen":1530337182, "last_seen":1573110615, "count":93021, "tags":"", "ttl":0, "manifold": 1 },
{ "first_seen":1562930418, "last_seen":1573110404, "count":1020492, "tags":"", "ttl":8912, "manifold": 3 }
]
}
3. Security Considerations
While this document solely focuses on the format, the reference
implementation is SightingDB. The authentication, the data access is
@ -268,21 +304,14 @@ Internet-Draft SightingDB query format November 2019
Even a Hashed value can be discovered, as re-hashing known values
would match.
5. Acknowledgements
4. Acknowledgements
The author wish to thank all the MISP community who are supporting
the creation of open standards in threat intelligence sharing. As
well as amazing feedback gathered during the MISP Summit 2019 in
Luxembourg, in particular with Alexandre Dulaunoy and Andras Iklody.
Tricaud Expires May 6, 2020 [Page 5]
Internet-Draft SightingDB query format November 2019
6. Normative References
5. Normative References
[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", BCP 14, RFC 2119,
@ -296,6 +325,19 @@ Internet-Draft SightingDB query format November 2019
Author's Address
Tricaud Expires May 6, 2020 [Page 6]
Internet-Draft SightingDB query format November 2019
Sebastien Tricaud
Devo Inc.
150 Cambridgepark Drive
@ -333,4 +375,18 @@ Author's Address
Tricaud Expires May 6, 2020 [Page 6]
Tricaud Expires May 6, 2020 [Page 7]