CVE-2020-8937

An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to enc_untrusted_create_wait_queue that uses a pointer queue that relies on UntrustedLocalMemcpy, which fails to validate where the pointer is located. This allows an attacker to write memory values from within the enclave. We recommend upgrading past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02

CVSS v3 5.3 MEDIUM
CVSS v2.0 2.1 LOW

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.0 / Impact : 4.2

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

2.1^/10

CVSS v2.0 : LOW

Vector : AV:L/AC:L/Au:N/C:N/I:P/A:N

Exploitability : 3.9 / Impact : 2.9

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact NONE

References

Link	Resource
https://github.com/google/asylo/commit/a37fb6a0e7daf30134dbbf357c9a518a1026aa02	Patch Third Party Advisory
https://github.com/google/asylo/commit/a37fb6a0e7daf30134dbbf357c9a518a1026aa02	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*

History

21 Nov 2024, 05:39

Type	Values Removed	Values Added
References	~~() https://github.com/google/asylo/commit/a37fb6a0e7daf30134dbbf357c9a518a1026aa02 - Patch, Third Party Advisory~~	() https://github.com/google/asylo/commit/a37fb6a0e7daf30134dbbf357c9a518a1026aa02 - Patch, Third Party Advisory
CVSS	v2 : ~~2.1~~ v3 : ~~3.3~~	v2 : 2.1 v3 : 5.3

Information

Published : 2020-12-15 15:15

Updated : 2024-11-21 05:39

NVD link : CVE-2020-8937

Mitre link : CVE-2020-8937

CVE.ORG link : CVE-2020-8937

JSON object : View

Products Affected

google

asylo

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CWE-787

Out-of-bounds Write

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