Medium
Security advisory
An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_read whose return size was not validated against the requrested size. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit b1d120a2c7d7446d2cc58d517e20a1b184b82200
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-8942
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:34 UTC · Revision 1
Source evidence
An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_read whose return size was not validated against the requrested size. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit b1d120a2c7d7446d2cc58d517e20a1b184b82200
osv:CVE-2020-8942
Complete source record
{
"id": "c4134fd5c52b9fcd747d7508e7182d27e2f415e5e60e81f0aa829476cadaed32",
"url": "https://osv.dev/vulnerability/CVE-2020-8942",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-8942",
"summary": "An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_read whose return size was not validated against the requrested size. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit b1d120a2c7d7446d2cc58d517e20a1b184b82200",
"evidence": "osv:CVE-2020-8942",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2020-8942",
"aliases": [
"CVE-2020-8942"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/google/asylo",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "299f804acbb95a612ab7c504d25ab908aa59ae93"
},
{
"fixed": "b1d120a2c7d7446d2cc58d517e20a1b184b82200"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "0.6.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "b1d120a2c7d7446d2cc58d517e20a1b184b82200"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v0.6.0",
"buildenv-v0.6.0",
"v0.5.3",
"buildenv-v0.5.3",
"v0.5.2",
"buildenv-v0.5.2",
"v0.5.1",
"buildenv-v0.5.1",
"v0.5.0",
"buildenv-v0.5.0",
"v0.4.1",
"buildenv-v0.4.1",
"v0.4.0",
"buildenv-v0.4.0",
"v0.3.4.1",
"v0.3.4",
"buildenv-v0.3.4",
"v0.3.3",
"buildenv-v0.3.3",
"v0.3.2",
"buildenv-v0.3.2",
"v0.3.1",
"buildenv-v0.3.1",
"v0.3.0",
"buildenv-v0.3.0",
"v0.2.2",
"buildenv-v0.2.2",
"v0.2.1",
"buildenv-v0.2.1",
"v0.2.0",
"buildenv-v0.2.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8942.json",
"vanir_signatures": [
{
"id": "CVE-2020-8942-799a829f",
"digest": {
"length": 170,
"function_hash": "286188060617969713134691840668857726043"
},
"source": "https://github.com/google/asylo/commit/b1d120a2c7d7446d2cc58d517e20a1b184b82200",
"target": {
"file": "asylo/platform/host_call/trusted/host_calls.cc",
"function": "enc_untrusted_read"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2020-8942-eb21fd70",
"digest": {
"threshold": 0.9,
"line_hashes": [
"169055635527515069807700832326285879920",
"154869453952709800637825808826408515286",
"181048328170087080058939355433701546269",
"111003065318683867700849633301437594357",
"335203860361179354144351810048345585024"
]
},
"source": "https://github.com/google/asylo/commit/b1d120a2c7d7446d2cc58d517e20a1b184b82200",
"target": {
"file": "asylo/platform/host_call/trusted/host_calls.cc"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:54:05Z"
}
}
],
"modified": "2026-10-20T13:54:05.883834833Z",
"provider": "osv",
"references": [
"https://github.com/google/asylo/commit/b1d120a2c7d7446d2cc58d517e20a1b184b82200"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2020-8942",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 388359,
"published_at": "2020-12-15T15:15:13.567+00:00"
}