CVE-2020-8936 - Arbitrary enclave memory overwrite vulnerability in ECall ecall_restore

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MEDIUM

Arbitrary enclave memory overwrite vulnerability in ECall ecall_restore

Published Dec 15, 2020

5.5

MEDIUM

CVSS 3.1

EPSS 0.14%

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.

Affected products

Vendor Google LLC Product Asylo Default
n/a
- Version
  0.6.0
  Status
  affected
  Constraints
  <=0.6.0

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

n/a

Version	Status	Constraints
0.6.0	affected	<=0.6.0

Remediation

Vendor solution

Upgrade past commit 83036fd841d33baa7e039f842d131aa7881fdcc2

Weaknesses (1)

CWE-125

Out-of-bounds Read

References (1)

https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2
x_refsource_CONFIRMPatchThird Party Advisory

Link	Providers	Tags
https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2		x_refsource_CONFIRMPatchThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner Google

Published Dec 15, 2020

Updated Aug 4, 2024

Reserved Feb 12, 2020

Link CVE-2020-8936

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2020-8936

Red Hat

Severity n/a

Public date n/a

Links CVE-2020-8936