Détail du CWE-1314

CWE-1314

Missing Write Protection for Parametric Data Values
Draft
2020-12-10
00h00 +00:00
2023-06-29
00h00 +00:00
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Nom: Missing Write Protection for Parametric Data Values

The device does not write-protect the parametric data values for sensors that scale the sensor value, allowing untrusted software to manipulate the apparent result and potentially damage hardware or cause operational failure.

Description du CWE

Various sensors are used by hardware to detect any devices operating outside of the design limits. The threshold limit values are set by hardware fuses or trusted software such as the BIOS. These limits may be related to thermal, power, voltage, current, and frequency. Hardware mechanisms may be used to protect against alteration of the threshold limit values by untrusted software.

The limit values are generally programmed in standard units for the type of value being read. However, the hardware-sensor blocks may report the settings in different units depending upon sensor design and operation. The raw sensor output value is converted to the desired units using a scale conversion based on the parametric data programmed into the sensor. The final converted value is then compared with the previously programmed limits.

While the limit values are usually protected, the sensor parametric data values may not be. By changing the parametric data, safe operational limits may be bypassed.

Informations générales

Modes d'introduction

Architecture and Design : The lack of a requirement to protect parametric values may contribute to this weakness.
Implementation : The lack of parametric value protection may be a cause of this weakness.

Plateformes applicables

Langue

Class: Not Language-Specific (Undetermined)

Systèmes d’exploitation

Class: Not OS-Specific (Undetermined)

Architectures

Class: Not Architecture-Specific (Undetermined)

Technologies

Name: Sensor Hardware (Undetermined)

Conséquences courantes

Portée Impact Probabilité
AvailabilityQuality Degradation, DoS: Resource Consumption (Other)

Note: Sensor value manipulation, particularly thermal or power, may allow physical damage to occur or disabling of the device by a false fault shutdown causing a Denial-Of-Service.		High

Exemples observés

Références Description

CVE-2017-8252

Kernel can inject faults in computations during the execution of TrustZone leading to information disclosure in Snapdragon Auto, Snapdragon Compute, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice and Music, Snapdragon Wearables, Snapdragon Wired Infrastructure and Networking.

Mesures d’atténuation potentielles

Phases : Architecture and Design
Access controls for sensor blocks should ensure that only trusted software is allowed to change threshold limits and sensor parametric data.

Notes de cartographie des vulnérabilités

Justification : 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.
Commentaire : 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.

Modèles d'attaque associés

CAPEC-ID Nom du modèle d'attaque
CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs
In applications, particularly web applications, access to functionality is mitigated by an authorization framework. This framework maps Access Control Lists (ACLs) to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application, or can run queries for data that they otherwise not supposed to.

Références

REF-1082

CLKSCREW: Exposing the Perils of Security-Oblivious Energy Management
Adrian Tang, Simha Sethumadhavan, Salvatore Stolfo.
https://www.usenix.org/system/files/conference/usenixsecurity17/sec17-tang.pdf

Soumission

Nom Organisation Date Date de publication Version
Hareesh Khattri, Parbati K. Manna, and Arun Kanuparthi Intel Corporation 2020-07-14 +00:00 2020-12-10 +00:00 4.3

Modifications

Nom Organisation Date Commentaire
CWE Content Team MITRE 2022-04-28 +00:00 updated Applicable_Platforms
CWE Content Team MITRE 2022-06-28 +00:00 updated Applicable_Platforms
CWE Content Team MITRE 2023-04-27 +00:00 updated Relationships
CWE Content Team MITRE 2023-06-29 +00:00 updated Mapping_Notes