Buffer overflow in Google Asylo
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
Vulnerability class: Buffer Overflow
EPSS: 0.001 (2.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Google Asylo
- Google Llc Asylo — versions 0.6.0
Weakness classification (CWE)
References
- cve-coordination@google.com (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8937?
- CVE-2020-8937 is a medium-severity vulnerability in Google Asylo, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2020-12-15.
- How severe is CVE-2020-8937?
- Medium severity. CVSS v3 base score is 5.3 out of 10.