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diff --git a/docs/3_Architecture_Guides/2_Security_Blueprint/7_Application.md b/docs/3_Architecture_Guides/2_Security_Blueprint/7_Application.md deleted file mode 100644 index c08d06e..0000000 --- a/docs/3_Architecture_Guides/2_Security_Blueprint/7_Application.md +++ /dev/null @@ -1,125 +0,0 @@ ---- -title: Application ---- - -**Application Hardening**: Best practices to apply to the build and release of -user space applications, in order to reduce the number of attack surfaces used -by potential attackers. - -The term of Application (App) has a very wide definition in **AGL**. Almost -anything which is not in the core Operating System (OS) is an Application. -Applications can be included in the base software package (image) or can be -added at run-time. - -Application containment is achieved using the following protections: - -- Linux Native protection - - Mandatory Access Control (**MAC**) -- AGL Platform protections - - Origin Tracking and Validation - - Application Privilege Management and Enforcement via Cynara - - Authenticated Transport via D-Bus - -## Application Types - -AGL provides a framework for applications to be written in different forms: - -- Web application: HTML5 + JavaScript -- Qt application: in a QML file -- Native application: in C - -While there is no harm in providing multiple types of applications, from a -security perspective this does increase the attack surface for an intruder. The -application framework (**AppFw**) consists of a number of utilities and daemons -which provide context for the applications. Isolation is provided through -**SMACK** labels. - -## Application Store - -Although the Tizen system has defined a [system of App signing and signing -flow](https://wiki.tizen.org/Security/Tizen_3.X_Overview#Application_Singing_and_Certificates) -to avoid the spread of unauthorized Apps that might contain malware. At this -point, it is unclear how much of this flow AGL will adopt. However, judging from -the experience, it is an essential topic. For example, the Google Play Store -controls the authorization of Apps through signing, and still, there are [many -accounts of Apps containing malware on the -store](http://www.eweek.com/mobile/researchers-find-132-malware-infected-android-apps-on-google-play). - -Tizen defines 5 levels of certificates and signing at each level, including an -author, testing distributor, public level store distributor, partner level store -distributor, and platform level store distributor. AGL may define a different -number of third parties, but at a minimum an author and store distributor should -be defined. - - - -Once the number of signatures has been established, verification of those -signatures needs to be done at a minimum at installation time on the AGL device. -It is important to ensure the robustness/integrity of the public key used for -signature verification. If the public key is modified, then this compromised key -can be used to verify an attacker's private key signature. - -Further to this, installation-time verification is limited. Attacks can happen -to apps in-memory at runtime. Any modifications made after installation will be -missed by installation-time verification. Integrity verification that runs -during execution makes for a more complete security story. - --------------------------------------------------------------------------------- - -## Acronyms and Abbreviations - -The following table lists the terms utilized within this part of the document. - -Acronyms or Abbreviations | Description -------------------------- | ---------------------------------------------------- -_3GPP_ | **3**rd **G**eneration **P**artnership **P**roject -_CASB_ | **C**loud **A**ccess **S**ecurity **B**roker -_DAST_ | **D**ynamic **A**pplication **S**ecurity **T**esting -_DPI_ | **D**eep **P**acket **I**nspection -_IDS_ | **I**ntrusion **D**etection **S**ystems -_IPS_ | **I**ntrusion **P**revention **S**ystems -_IPSec_ | **I**nternet **P**rotocol **Sec**urity -_LSM_ | **L**inux **S**ecurity **M**odule -_MITM_ | **M**an **I**n **T**he **M**iddle -_OSI_ | **O**pen **S**ystems **I**nterconnection -_SATS_ | **S**tatic **A**pplication **S**ecurity **T**esting - -# Local - -Domain | Improvement --------------------------- | ------------------------------ -Application-Installation-1 | Talk about AppFw offline mode. - -## Installation - -Applications can be delivered and installed with the base image using a special -offline-mode provided by the **AppFw**. Apps can also be installed at run time. - -During early release, default Apps are installed on the image at first boot. - -Domain | Object | Recommendations --------------------------- | --------- | ----------------------------------------------------------------------- -Application-Installation-1 | AppFw | Provide offline-mode in order to install app with the base image. -Application-Installation-2 | Integrity | Allow the installation of applications only if their integrity is good. - -# Local - -## Privilege Management - -Application privileges are managed by **Cynara** and the security manager in the -**AppFw**. For more details, please refer to the **AppFw** documentation in -Platform part. - -# App Signature - -Domain | Improvement ------------------------ | ---------------------------------------------------------- -Application-Signature-1 | Add content (see secure build in Secure development part). - - -# Services - -Domain | Improvement ----------------------- | ------------ -Application-Services-1 | Add content (Which services?). -Application-Services-2 | Add Binder.
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