CVE Vulnerability

CVE-2020-8905

A buffer length validation vulnerability in Asylo versions prior to 0.6.0 allows an attacker to read data they should not have access to. The 'enc_untrusted_recvfrom' function generates a return value which is deserialized by 'MessageReader', and copied into three different 'extents'. The length of the third 'extents' is controlled by the outside world, and not verified on copy, allowing the attacker to force Asylo to copy trusted memory data into an untrusted buffer of significantly small length.. We recommend updating Asylo to version 0.6.0 or later.

4 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

6.5 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/google/asylo/commit/299f804acbb95a612ab7c504d25ab908aa59ae93 Patch Third Party Advisory
Configurations

Configuration 1

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

Published : 2020-08-12 07:15

Updated : 2020-08-13 02:40

NVD link : CVE-2020-8905

Mitre link : CVE-2020-8905

Products Affected

Asylo

Google

CWE
CWE-120