CVE-2020-8943 MEDIUM

CVE-2020-8943: Unchecked buffer overrun in enc_untrusted_recvfrom

Vendor Google Llc
Product Asylo
Weakness CWE-120
Published December 15, 2020
Last update August 4, 2024

CVSS base score

5.3/10
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

What the vulnerability does

01Description

An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_recvfrom whose return size was not validated against the requested size. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit 6e158d558abd3c29a0208e30c97c9a8c5bd4230f

Key dates

02Disclosure timeline

December 15, 2020 CVE published
August 4, 2024 Record updated