{"id":"CVE-2020-8936","details":"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.","modified":"2026-07-08T20:29:53.685774Z","published":"2020-12-15T15:15:13.127Z","references":[{"type":"FIX","url":"https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/google/asylo","events":[{"introduced":"0"},{"last_affected":"299f804acbb95a612ab7c504d25ab908aa59ae93"},{"fixed":"83036fd841d33baa7e039f842d131aa7881fdcc2"}],"database_specific":{"cpe":"cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"0"},{"last_affected":"0.6.0"}],"source":["CPE_RANGE","REFERENCES"]}}],"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-2020-8936.json","vanir_signatures_modified":"2026-07-08T20:29:53Z","vanir_signatures":[{"digest":{"line_hashes":["249849551134861197772701074161590743093","288542086381598857212057362218517107524","229767768765419279177818205328034353549","298254167630889455123360114835833751118"],"threshold":0.9},"id":"CVE-2020-8936-0ce685a3","signature_type":"Line","signature_version":"v1","source":"https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2","target":{"file":"asylo/platform/primitives/sgx/trusted_sgx.cc"},"deprecated":false},{"deprecated":false,"digest":{"function_hash":"63509712737912869867927962631554045034","length":1047},"id":"CVE-2020-8936-63b825ab","signature_type":"Function","signature_version":"v1","source":"https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2","target":{"file":"asylo/platform/primitives/sgx/trusted_sgx.cc","function":"TrustedPrimitives::UntrustedCall"}}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}