CVE-2020-8939

Out of Bounds read in Asylo

View on CVE.org

Published Dec 15, 2020 CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Description

An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4

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	≤ 0.6.0

Configuration 1 [-]

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

No data.

No data available yet.

Remediation

Vendor Solution

We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2020-29770	An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4

Metrics

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.

Exploit prediction score: < 1% (0.135% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4

History

No history.

Subscriptions

Google Asylo

Weaknesses

CWE-125

Sources

CVE record Updated: Aug 4, 2024, 10:12 AM

Status: PUBLISHED
Assigner: Google
Published: Dec 15, 2020, 2:55 PM
Updated: Aug 4, 2024, 10:12 AM
Reserved: Feb 12, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:27 AM

Status: Modified
Published: Dec 15, 2020, 3:15 PM
Modified: Jun 17, 2026, 3:27 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

{"containers": {"cna": {"affected": [{"product": "Asylo", "vendor": "Google LLC", "versions": [{"lessThanOrEqual": "0.6.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "Qinkun Bao (Baidu Security)"}, {"lang": "en", "value": "Zhaofeng Chen (Baidu Security)"}, {"lang": "en", "value": "Mingshen Sun (Baidu Security)"}, {"lang": "en", "value": "Kang Li (Baidu Security)"}], "descriptions": [{"lang": "en", "value": "An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "metrics": [{"cvssV3_1": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"cweId": "CWE-125", "description": "CWE-125 Out-of-bounds Read", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2020-12-15T14:55:35.000Z", "orgId": "14ed7db2-1595-443d-9d34-6215bf890778", "shortName": "Google"}, "references": [{"tags": ["x_refsource_CONFIRM"], "url": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "solutions": [{"lang": "en", "value": "We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "source": {"discovery": "EXTERNAL"}, "title": "Out of Bounds read in Asylo", "x_generator": {"engine": "Vulnogram 0.0.9"}, "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@google.com", "ID": "CVE-2020-8939", "STATE": "PUBLIC", "TITLE": "Out of Bounds read in Asylo"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Asylo", "version": {"version_data": [{"version_affected": "<=", "version_value": "0.6.0"}]}}]}, "vendor_name": "Google LLC"}]}}, "credit": [{"lang": "eng", "value": "Qinkun Bao (Baidu Security)"}, {"lang": "eng", "value": "Zhaofeng Chen (Baidu Security)"}, {"lang": "eng", "value": "Mingshen Sun (Baidu Security)"}, {"lang": "eng", "value": "Kang Li (Baidu Security)"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}]}, "generator": {"engine": "Vulnogram 0.0.9"}, "impact": {"cvss": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "CWE-125 Out-of-bounds Read"}]}]}, "references": {"reference_data": [{"name": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4", "refsource": "CONFIRM", "url": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4"}]}, "solution": [{"lang": "en", "value": "We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "source": {"discovery": "EXTERNAL"}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T10:12:11.010Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_CONFIRM", "x_transferred"], "url": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4"}]}]}, "cveMetadata": {"assignerOrgId": "14ed7db2-1595-443d-9d34-6215bf890778", "assignerShortName": "Google", "cveId": "CVE-2020-8939", "datePublished": "2020-12-15T14:55:35.000Z", "dateReserved": "2020-02-12T00:00:00.000Z", "dateUpdated": "2024-08-04T10:12:11.010Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"affected": [{"affectedData": [{"product": "Asylo", "vendor": "Google LLC", "versions": [{"lessThanOrEqual": "0.6.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "source": "cve-coordination@google.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*", "matchCriteriaId": "D4356338-A28E-442E-BD14-1A927E3824E9", "versionEndIncluding": "0.6.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An out of bounds read on the enc_untrusted_inet_ntop function allows an attack to extend the result size that is used by memcpy() to read memory from within the enclave heap. We recommend upgrading past commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}, {"lang": "es", "value": "Una lectura fuera de l\u00edmites en la funci\u00f3n enc_untrusted_inet_ntop permite que un ataque extienda el tama\u00f1o del resultado que usa la funci\u00f3n memcpy() para leer la memoria desde dentro de la pila del enclave. Recomendamos actualizar m\u00e1s all\u00e1 del commit 6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "id": "CVE-2020-8939", "lastModified": "2026-06-17T03:27:12.357", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "LOW", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "PARTIAL", "integrityImpact": "NONE", "vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.0, "impactScore": 4.2, "source": "cve-coordination@google.com", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-12-15T15:15:13.363", "references": [{"source": "cve-coordination@google.com", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/google/asylo/commit/6ff3b77ffe110a33a2f93848a6333f33616f02c4"}], "sourceIdentifier": "cve-coordination@google.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-125"}], "source": "cve-coordination@google.com", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-125"}], "source": "nvd@nist.gov", "type": "Primary"}]}