#VU45854 Buffer overflow in asylo - CVE-2020-8904
Published: August 12, 2020 / Updated: August 21, 2020
Vulnerability identifier: #VU45854
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-8904
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
asylo
asylo
Software vendor:
Google
Description
The vulnerability allows a remote authenticated user to #BASIC_IMPACT#.
An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0. As the ecall_restore function fails to validate the range of the output_len pointer, an attacker can manipulate the tmp_output_len value and write to an arbitrary location in the trusted (enclave) memory. We recommend updating Asylo to version 0.6.0 or later.
Remediation
Install update from vendor's website.