名前: Firmware Not Updateable

The product does not provide its users with the ability to update or patch its firmware to address any vulnerabilities or weaknesses that may be present.

一般情報

導入モード

Requirements : Requirements development might not consider the importance of updates over the lifetime of the product, or might not choose the ability due to concerns such as expense or speed to market.
Architecture and Design : Lack of planning during architecture development and design, or external pressures such as speed to market, could ignore the capability to update.
Implementation : The weakness can appear through oversight during implementation.

適用可能なプラットフォーム

言語

クラス： Not Language-Specific (Undetermined)

オペレーティングシステム

クラス： Not OS-Specific (Undetermined)

アーキテクチャ

クラス： Not Architecture-Specific (Undetermined)

テクノロジー

クラス： Not Technology-Specific (Undetermined)

一般的な結果

スコープ	影響	可能性
Confidentiality Integrity Access Control Authentication Authorization	Gain Privileges or Assume Identity, Bypass Protection Mechanism, Execute Unauthorized Code or Commands, DoS: Crash, Exit, or Restart 注記： Without the ability to patch or update firmware, consumers will be left vulnerable to exploitation of any known vulnerabilities, or any vulnerabilities that are discovered in the future. This can expose consumers to permanent risk throughout the entire lifetime of the device, which could be years or decades. It may be possible for the attack to be used against an entire class of devices. Some external protective measures and mitigations might be employed to aid in preventing or reducing the risk of malicious attack, but the root weakness cannot be corrected.	Medium

観察された例

参考文献	説明
CVE-2020-9054	Chain: network-attached storage (NAS) device has a critical OS command injection (CWE-78) vulnerability that is actively exploited to place IoT devices into a botnet, but some products are "end-of-support" and cannot be patched (CWE-1277). [REF-1097]
[REF-1095]	A hardware "smart lock" has weak key generation that allows attackers to steal the key by BLE sniffing, but the device's firmware cannot be upgraded and hence remains vulnerable [REF-1095].

潜在的な緩和策

Phases : Requirements
Specify requirements to include the ability to update the firmware. Include integrity checks and authentication to ensure that untrusted firmware cannot be installed.
Phases : Architecture and Design
Design the device to allow for updating the firmware. Ensure that the design specifies how to distribute the updates and ensure their integrity and authentication.
Phases : Implementation
Implement the necessary functionality to allow the firmware to be updated.

検出方法

Manual Analysis

Create a new installable boot image of the current build with a minor version number change. Use the standard installation method to update the boot image. Verify that the minor version number has changed. Create a fake image. Verify that the boot updater will not install the fake image and generates an "invalid image" error message or equivalent.
有効性 : High

Architecture or Design Review

Check the consumer or maintainer documentation, the architecture/design documentation, or the original requirements to ensure that the documentation includes details for how to update the firmware.
有効性 : Moderate

Manual Dynamic Analysis

Determine if there is a lack of a capability to update read-only memory (ROM) structure. This could manifest as a difference between the latest firmware version and the current version within the device.
有効性 : High

脆弱性マッピングノート

理由 : This CWE entry is at the Base level of abstraction, which is a preferred level of abstraction for mapping to the root causes of vulnerabilities.
コメント : Carefully read both the name and description to ensure that this mapping is an appropriate fit. Do not try to 'force' a mapping to a lower-level Base/Variant simply to comply with this preferred level of abstraction.

ノート

The "firmware" term does not have a single commonly-shared definition, so there may be variations in how this CWE entry is interpreted during mapping.

参考文献

REF-1095

Bad news: KeyWe Smart Lock is easily bypassed and can't be fixed
Matthew Hughes.
https://www.theregister.com/2019/12/11/f_secure_keywe/

REF-1096

Alarm bells ring, the IoT is listening
Alex Scroxton.
https://www.computerweekly.com/news/252475324/Alarm-bells-ring-the-IoT-is-listening

REF-1097

Zyxel Flaw Powers New Mirai IoT Botnet Strain
Brian Krebs.
https://krebsonsecurity.com/2020/03/zxyel-flaw-powers-new-mirai-iot-botnet-strain/

登録情報

名前	組織	日付	リリース日	Version
Paul A. Wortman	Wells Fargo	2020-05-13 +00:00	2020-02-24 +00:00	4.1

変更履歴

名前	組織	日付	コメント
CWE Content Team	MITRE	2020-08-20 +00:00	updated Common_Consequences, Demonstrative_Examples, Description, Potential_Mitigations
CWE Content Team	MITRE	2020-12-10 +00:00	updated Description, Relationships
CWE Content Team	MITRE	2021-03-15 +00:00	updated Maintenance_Notes
CWE Content Team	MITRE	2021-07-20 +00:00	updated Demonstrative_Examples, Maintenance_Notes
CWE Content Team	MITRE	2021-10-28 +00:00	updated Common_Consequences, Description, Detection_Factors, Maintenance_Notes, Modes_of_Introduction, Observed_Examples, References, Relationships, Terminology_Notes, Weakness_Ordinalities
CWE Content Team	MITRE	2022-04-28 +00:00	updated Detection_Factors, Observed_Examples, Potential_Mitigations, Relationships
CWE Content Team	MITRE	2022-10-13 +00:00	updated Related_Attack_Patterns
CWE Content Team	MITRE	2023-04-27 +00:00	updated Relationships
CWE Content Team	MITRE	2023-06-29 +00:00	updated Mapping_Notes
CWE Content Team	MITRE	2026-10-28 +00:00	updated Common_Consequences, Description

CWE-1277 詳細

CWE-1277