CVE-2020-8939

CVSS V2 Low 2.1 CVSS V3 Medium 5.5

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

Overview

CVE ID
CVE-2020-8939

Assigner
cve-coordination@google.com

Vulnerability Status
Analyzed

Published Version
2020-12-15T15:15:13

Last Modified Date
2020-12-17T14:04:23

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

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/6ff3b77ffe110a33a2f93848a6333f33616f02c4	Patch Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-8939
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-8939

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:29:58				Added to TrackCVE
2022-12-05 18:16:05	security@google.com	cve-coordination@google.com	CVE Assigner	updated
2022-12-05 18:16:06	2020-12-15T15:15Z	2020-12-15T15:15:13	CVE Published Date	updated
2022-12-05 18:16:06		2020-12-17T14:04:23	CVE Modified Date	updated
2022-12-05 18:16:06		Analyzed	Vulnerability Status	updated