Szczegóły CWE-1316

CWE-1316

Fabric-Address Map Allows Programming of Unwarranted Overlaps of Protected and Unprotected Ranges
Draft
2020-12-10
00h00 +00:00
2025-12-11
00h00 +00:00
CWE Mitre.org
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Nazwa: Fabric-Address Map Allows Programming of Unwarranted Overlaps of Protected and Unprotected Ranges

The address map of the on-chip fabric has protected and unprotected regions overlapping, allowing an attacker to bypass access control to the overlapping portion of the protected region.

Informacje ogólne

Sposoby wprowadzenia

Architecture and Design
Implementation

Odpowiednie platformy

Język

Class: Not Language-Specific (Undetermined)

Systemy operacyjne

Class: Not OS-Specific (Undetermined)

Architektury

Class: Not Architecture-Specific (Undetermined)

Technologie

Name: Bus/Interface Hardware (Undetermined)
Class: Not Technology-Specific (Undetermined)

Typowe konsekwencje

Zakres Wpływ Prawdopodobieństwo
Confidentiality
Integrity
Access Control
Authorization		Bypass Protection Mechanism, Read Memory, Modify MemoryMedium

Zaobserwowane przykłady

Odniesienia Opis

CVE-2009-4419

Attacker can modify MCHBAR register to overlap with an attacker-controlled region, which modification prevents the SENTER instruction from properly applying VT-d protection while a Measured Launch Environment is being launched.

Potencjalne środki zaradcze

Phases : Architecture and Design
When architecting the address map of the chip, ensure that protected and unprotected ranges are isolated and do not overlap. When designing, ensure that ranges hardcoded in Register-Transfer Level (RTL) do not overlap.
Phases : Implementation
Ranges configured by firmware should not overlap. If overlaps are mandatory because of constraints such as a limited number of registers, then ensure that no assets are present in the overlapped portion.
Phases : Testing
Validate mitigation actions with robust testing.

Metody wykrywania

Automated Dynamic Analysis

Review address map in specification to see if there are any overlapping ranges.
Skuteczność : High

Manual Static Analysis

Negative testing of access control on overlapped ranges.
Skuteczność : High

Uwagi dotyczące mapowania podatności

Uzasadnienie : 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.
Komentarz : 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.

Powiązane wzorce ataków

CAPEC-ID Nazwa wzorca ataku
CAPEC-456 Infected Memory
An adversary inserts malicious logic into memory enabling them to achieve a negative impact. This logic is often hidden from the user of the system and works behind the scenes to achieve negative impacts. This pattern of attack focuses on systems already fielded and used in operation as opposed to systems that are still under development and part of the supply chain.
CAPEC-679 Exploitation of Improperly Configured or Implemented Memory Protections

Notatki

As of CWE 4.6, CWE-1260 and CWE-1316 are siblings under view 1000, but CWE-1260 might be a parent of CWE-1316. More analysis is warranted.

Odniesienia

REF-1137

BARing the System - New vulnerabilities in Coreboot & UEFI-based Systems
Yuriy Bulygin, Oleksandr Bazhaniuk, Andrew Furtak, John Loucaides, Mikhail Gorobets.
https://www.c7zero.info/stuff/REConBrussels2017_BARing_the_system.pdf

Zgłoszenie

Nazwa Organizacja Data Data wydania Version
Arun Kanuparthi, Hareesh Khattri, Parbati Kumar Manna Intel Corporation 2020-06-01 +00:00 2020-12-10 +00:00 4.3

Modyfikacje

Nazwa Organizacja Data Komentarz
CWE Content Team MITRE 2021-10-28 +00:00 updated Maintenance_Notes
CWE Content Team MITRE 2022-04-28 +00:00 updated Applicable_Platforms, Related_Attack_Patterns
CWE Content Team MITRE 2022-06-28 +00:00 updated Applicable_Platforms
CWE Content Team MITRE 2022-10-13 +00:00 updated References
CWE Content Team MITRE 2023-01-31 +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 2025-12-11 +00:00 updated Weakness_Ordinalities
Informacje prezentowane na CVE Find pochodzą z kilku starannie wybranych źródeł referencyjnych. Dane CVE są dostarczane przez MITRE Corporation i Narodową Bazę Podatności (NVD). Katalog znanych eksploatowanych podatności (KEV) pochodzi z Agencji ds. Bezpieczeństwa Cyberprzestrzeni i Infrastruktury (CISA), natomiast wyniki EPSS pochodzą z FIRST.org. Ponadto dane dotyczące słabości oprogramowania (CWE) i typowych wzorców ataków (CAPEC) są utrzymywane przez MITRE Corporation, a informacje o konfiguracjach sprzętu i oprogramowania (CPE) są dostarczane przez NVD.