Buffer overflow in Google Asylo
CVE-2020-8904
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.
EPSS: 0.002 (14.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H.
Affected products
- Google Asylo
- Google Llc Asylo — versions stable
Weakness classification (CWE)
References
- cve-coordination@google.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8904?
- CVE-2020-8904 is a medium-severity vulnerability in Google Asylo, classified under CWE-823. CVSS score: 6.4/10. Published 2020-08-12.
- How severe is CVE-2020-8904?
- Medium severity. CVSS v3 base score is 6.4 out of 10.