diff options
Diffstat (limited to 'security-blueprint/part-2')
| -rw-r--r-- | security-blueprint/part-2/0_Abstract.md | 8 | ||||
| -rw-r--r-- | security-blueprint/part-2/1-Image.md | 8 | ||||
| -rw-r--r-- | security-blueprint/part-2/2-Communication-modes.md | 18 | ||||
| -rw-r--r-- | security-blueprint/part-2/3-Consoles.md | 18 |
4 files changed, 26 insertions, 26 deletions
diff --git a/security-blueprint/part-2/0_Abstract.md b/security-blueprint/part-2/0_Abstract.md index 5ebb750..4574ecf 100644 --- a/security-blueprint/part-2/0_Abstract.md +++ b/security-blueprint/part-2/0_Abstract.md @@ -2,13 +2,13 @@ ## Abstract -<!-- todo --> +<!-- section-todo --> Domain | Improvement --------------- | ---------------------------------------------------- Boot-Abstract-1 | More generic and add examples (The chain of trust). -<!-- endtodo --> +<!-- end-section-todo --> **Boot Hardening**: Steps/requirements to configure the boot sequence, in order to restrict the device from executing anything other than the approved software @@ -29,13 +29,13 @@ they may be upgraded to requirements status in the future. In addition, specific operators may change some of these recommendations into requirements based on their specific needs and objectives. -<!-- todo --> +<!-- section-todo --> Domain | Improvement --------------- | ------------------------------------------- Boot-Abstract-1 | Review the definition of the "boot loader". -<!-- endtodo --> +<!-- end-section-todo --> **Boot loader**: The boot loader consists of the Primary boot loader residing in **OTP** memory, sboot, U-Boot and Secure loader residing in external flash diff --git a/security-blueprint/part-2/1-Image.md b/security-blueprint/part-2/1-Image.md index c0eb0b6..453b397 100644 --- a/security-blueprint/part-2/1-Image.md +++ b/security-blueprint/part-2/1-Image.md @@ -8,14 +8,14 @@ as specified in the boot environment. In U-Boot set the "_bootdelay_" environment variable and/or define `CONFIG_BOOTDELAY` to _-2_. -<!-- config --> +<!-- section-config --> Domain | _Variable_ / `Config` name | `Value` ---------------------- | -------------------------- | ------- Boot-Image-Selection-1 | `CONFIG_BOOTDELAY` | `-2` Boot-Image-Selection-2 | _bootdelay_ | `-2` -<!-- endconfig --> +<!-- end-section-config --> -------------------------------------------------------------------------------- @@ -38,7 +38,7 @@ CONFIG_DEFAULT_DEVICE_TREE: Specifies the default Device Tree used for the run-t Generate the U-Boot image with public keys to validate and load the image. It shall use RSA2048 and SHA256 for authentication. -<!-- config --> +<!-- section-config --> Domain | `Config` name | _State_ ------------------------- | ---------------------------- | -------- @@ -49,4 +49,4 @@ Boot-Image-Authenticity-4 | `CONFIG_OF_CONTROL` | _Enable_ Boot-Image-Authenticity-5 | `CONFIG_OF_SEPARATE` | _Enable_ Boot-Image-Authenticity-6 | `CONFIG_DEFAULT_DEVICE_TREE` | _Enable_ -<!-- endconfig --> +<!-- end-section-config --> diff --git a/security-blueprint/part-2/2-Communication-modes.md b/security-blueprint/part-2/2-Communication-modes.md index d3a823c..d3539f8 100644 --- a/security-blueprint/part-2/2-Communication-modes.md +++ b/security-blueprint/part-2/2-Communication-modes.md @@ -21,7 +21,7 @@ required USB devices. User-initiated USB-filesystems should be treated with special care. Whether or not the filesystems are mounted in userspace (**FUSE**), restricted mount options should be observed. -<!-- config --> +<!-- section-config --> Domain | Communication modes | _State_ -------------------- | ------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- @@ -31,7 +31,7 @@ Boot-Communication-3 | `Ethernet` | _Disabled_ Boot-Communication-4 | U-boot and sboot `DOCSIS` | _Disabled_ Boot-Communication-5 | `Serial ports` | _Disabled_ -<!-- endconfig --> <!-- config --> +<!-- end-section-config --> <!-- section-config --> Domain | `Config` name | _State_ ------------------------ | ----------------------- | ------------- @@ -41,7 +41,7 @@ Boot-Communication-USB-3 | `CONFIG_USB_KEYBOARD` | _Not defined_ Boot-Communication-USB-4 | `CONFIG_USB_STORAGE` | _Not defined_ Boot-Communication-USB-5 | `CONFIG_USB_HOST_ETHER` | _Not defined_ -<!-- endconfig --> +<!-- end-section-config --> -------------------------------------------------------------------------------- @@ -50,25 +50,25 @@ Boot-Communication-USB-5 | `CONFIG_USB_HOST_ETHER` | _Not defined_ Preferably no network interface is allowed, but if required, then the enabled services should be restricted to only those used. -<!-- config --> +<!-- section-config --> Domain | Communication modes | _State_ -------------------- | -------------------- | --------------------------------------------------------------------------------------------- Boot-Communication-1 | `Network interfaces` | Preferably _no network interface is allowed_, otherwise, restrict the services to those used. -<!-- endconfig --> +<!-- end-section-config --> ## Remove or Disable Unnecessary Services, Ports, and Devices Restrict the `services`, `ports` and `devices` to those used. -<!-- config --> +<!-- section-config --> Domain | Object | Recommendations -------------------- | --------------------------------- | ------------------------------------------------------------- Boot-Communication-1 | `Services`, `ports` and `devices` | Restrict the `services`, `ports` and `devices` to those used. -<!-- endconfig --> +<!-- end-section-config --> ## Disable flash access @@ -78,12 +78,12 @@ In U-Boot following flash memory commands shall be disabled: **NAND**: Support for nand flash access available through `do_nand` has to be disabled. -<!-- config --> +<!-- section-config --> Domain | `Command` name | _State_ -------------------------- | -------------- | --------- Boot-Communication-Flash-1 | `do_nand` | _Disable_ -<!-- endconfig --> +<!-- end-section-config --> Similarly sboot should disable flash access support through command line if any. diff --git a/security-blueprint/part-2/3-Consoles.md b/security-blueprint/part-2/3-Consoles.md index 5adad3f..366573b 100644 --- a/security-blueprint/part-2/3-Consoles.md +++ b/security-blueprint/part-2/3-Consoles.md @@ -5,7 +5,7 @@ Serial console output shall be disabled. To disable console output in U-Boot, set the following macros: -<!-- config --> +<!-- section-config --> Domain | `Config` name | `Value` ---------------------- | --------------------------------------- | --------- @@ -13,24 +13,24 @@ Boot-Consoles-Serial-1 | `CONFIG_SILENT_CONSOLE` | `Disable` Boot-Consoles-Serial-2 | `CONFIG_SYS_DEVICE_NULLDEV` | `Disable` Boot-Consoles-Serial-3 | `CONFIG_SILENT_CONSOLE_UPDATE_ON_RELOC` | `Disable` -<!-- endconfig --> <!-- todo --> +<!-- end-section-config --> <!-- section-todo --> Domain | Improvement --------------- | ------------------------------------ Boot-Consoles-1 | Secure loader: No reference earlier? -<!-- endtodo --> +<!-- end-section-todo --> And set "**silent**" environment variable. For the Secure loader, disable the traces by undefined the below macro: -<!-- config --> +<!-- section-config --> Domain | `Environment variable` name | _State_ ---------------------- | --------------------------- | ------------- Boot-Consoles-Serial-1 | `INC_DEBUG_PRINT` | _Not defined_ -<!-- endconfig --> +<!-- end-section-config --> For sboot proper configuration needs to be done to disable the serial console. @@ -49,7 +49,7 @@ environment variable and not in non-volatile memory. Remove configuration options related to non-volatile memory, such as: -<!-- config --> +<!-- section-config --> Domain | `Config` name | _State_ -------------------------- | ---------------------------- | --------- @@ -66,7 +66,7 @@ Boot-Consoles-Variables-10 | `CONFIG_ENV_IS_IN_REMOTE` | `#undef` Boot-Consoles-Variables-11 | `CONFIG_ENV_IS_IN_UBI` | `#undef` Boot-Consoles-Variables-12 | `CONFIG_ENV_IS_NOWHERE` | `#define` -<!-- endconfig --> +<!-- end-section-config --> -------------------------------------------------------------------------------- @@ -88,7 +88,7 @@ mtest : Simple ram read/write test. loopw : Infinite write loop on address range. ``` -<!-- config --> +<!-- section-config --> Domain | `Command` name | _State_ ----------------------- | -------------- | ---------- @@ -102,6 +102,6 @@ Boot-Consoles-MemDump-7 | `mdc` | _Disabled_ Boot-Consoles-MemDump-8 | `mtest` | _Disabled_ Boot-Consoles-MemDump-9 | `loopw` | _Disabled_ -<!-- endconfig --> +<!-- end-section-config --> Similarly, memory dump support shall be disabled from sboot. |