CVE-2021-22550

Enclave memory overwrite/overread vulnerability in Asylo UntrustedCacheMalloc::GetBuffer

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Published Jun 8, 2021 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Description

An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secure enclave. It is recommended to update past 0.6.3 or git commit https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c

Affected Products

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
`unspecified`	affected	≤ 0.6.1

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-9691	An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secure enclave. It is recommended to update past 0.6.3 or git commit https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Local

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.102% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/google/asylo/commit/a47ef55db2337d29de19c50cd29b0deb2871d31c

History

No history.

Subscriptions

Google Asylo

Weaknesses

Sources

CVE record Updated: Sep 16, 2024, 11:10 PM

Status: PUBLISHED
Assigner: Google
Published: Jun 8, 2021, 1:15 PM
Updated: Sep 16, 2024, 11:10 PM
Reserved: Jan 5, 2021, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:37 AM

Status: Modified
Published: Jun 8, 2021, 2:15 PM
Modified: Jun 17, 2026, 3:37 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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