CVE-2020-8936 - Vulnerability Details - OpenCVE

Description

An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within sgx_params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.

Published: 2020-12-15

Score: 5.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Google LLC

Asylo

affected

Version	Status	Constraints
`0.6.0`	affected	≤ 0.6.0

Configuration 1 [-]

cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

Vendor Solution

Upgrade past commit 83036fd841d33baa7e039f842d131aa7881fdcc2

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2020-29767	An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within sgx_params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact None

Availability Impact None

This CVE is not in the KEV list.

The EPSS score is 0.00019.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2

History

No history.

Subscriptions

Google Asylo

MITRE

Status: PUBLISHED

Assigner: Google

Published: 2020-12-15T14:55:33.000Z

Updated: 2024-08-04T10:12:11.009Z

Reserved: 2020-02-12T00:00:00.000Z

Link: CVE-2020-8936

Vulnrichment

No data.

NVD

Status : Modified

Published: 2020-12-15T15:15:13.127

Modified: 2024-11-21T05:39:41.990

Link: CVE-2020-8936

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-125

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