名稱: Exposure of Sensitive Information caused by Incorrect Data Forwarding during Transient Execution

A processor event or prediction may allow incorrect or stale data to be forwarded to transient operations, potentially exposing data over a covert channel.

一般資訊

引入方式

Architecture and Design

適用平台

程式語言

類別： Not Language-Specific (Undetermined)

作業系統

類別： Not OS-Specific (Undetermined)

架構

類別： Not Architecture-Specific (Undetermined)

技術

類別： Not Technology-Specific (Undetermined)

常見後果

範圍	影響	可能性
Confidentiality	Read Memory	Medium

觀察到的案例

參考資料	描述
CVE-2020-0551	A fault, microcode assist, or abort may allow transient load operations to forward malicious stale data to dependent operations executed by a victim, causing the victim to unintentionally access and potentially expose its own data over a covert channel.
CVE-2020-8698	A fast store forwarding predictor may allow store operations to forward incorrect data to transient load operations, potentially exposing data over a covert channel.

潛在緩解措施

Phases : Architecture and Design
Phases : Requirements
Phases : Requirements
Phases : Requirements
Phases : Build and Compilation
Phases : Build and Compilation
Phases : Build and Compilation
Phases : Build and Compilation
Phases : Build and Compilation
Phases : Documentation

偵測方法

Automated Static Analysis

有效性 : Moderate

Manual Analysis

有效性 : Moderate

Automated Analysis

有效性 : High

漏洞對應備注

理由說明 : 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
備註 : Use only when the weakness arises from forwarding of incorrect/stale data, and the data is not architecturally restricted (that is, the forwarded data is accessible within the current processor context).

參考資料

REF-1389

You Cannot Always Win the Race: Analyzing the LFENCE/JMP Mitigation for Branch Target Injection
Alyssa Milburn, Ke Sun, Henrique Kawakami.
https://arxiv.org/abs/2203.04277

REF-1390

Speculation
The kernel development community.
https://docs.kernel.org/6.6/staging/speculation.html

REF-1391

LVI : Hijacking Transient Execution through Microarchitectural Load Value Injection
Jo Van Bulck, Daniel Moghimi, Michael Schwarz, Moritz Lipp, Marina Minkin, Daniel Genkin, Yuval Yarom, Berk Sunar, Daniel Gruss, Frank Piessens.
https://lviattack.eu/lvi.pdf

REF-1392

Fast Store Forwarding Predictor
Intel Corporation.
https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/fast-store-forwarding-predictor.html

REF-1393

Security Analysis Of AMD Predictive Store Forwarding
AMD.
https://www.amd.com/system/files/documents/security-analysis-predictive-store-forwarding.pdf

提交

名稱	機構	日期	發布日期	Version
Scott D. Constable	Intel Corporation	2023-09-19 +00:00	2024-02-29 +00:00	4.14

修改記錄

名稱	機構	日期	備註
CWE Content Team	MITRE	2025-12-11 +00:00	updated Weakness_Ordinalities
CWE Content Team	MITRE	2026-10-28 +00:00	updated Relationships

CWE-1422 詳細資料

CWE-1422