CVE-2020-8936
CVSS V2 Low 2.1
CVSS V3 Medium 5.5
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.
Overview
- CVE ID
- CVE-2020-8936
- Assigner
- cve-coordination@google.com
- Vulnerability Status
- Analyzed
- Published Version
- 2020-12-15T15:15:13
- Last Modified Date
- 2020-12-18T02:49:22
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:* | 1 | OR | 0.6.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:L/AC:L/Au:N/C:P/I:N/A:N
- Access Vector
- LOCAL
- Access Compatibility
- LOW
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- NONE
- Base Score
- 2.1
- Severity
- LOW
- Exploitability Score
- 3.9
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Attack Vector
- LOCAL
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- NONE
- Base Score
- 5.5
- Base Severity
- MEDIUM
- Exploitability Score
- 1.8
- Impact Score
- 3.6
References
| Reference URL | Reference Tags |
|---|---|
| https://github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2 | Patch Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2020-8936 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8936 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:29:52 | Added to TrackCVE | |||
| 2022-12-05 18:15:53 | security@google.com | cve-coordination@google.com | CVE Assigner | updated |
| 2022-12-05 18:15:53 | 2020-12-15T15:15Z | 2020-12-15T15:15:13 | CVE Published Date | updated |
| 2022-12-05 18:15:53 | 2020-12-18T02:49:22 | CVE Modified Date | updated | |
| 2022-12-05 18:15:53 | Analyzed | Vulnerability Status | updated |