Out-of-bounds Read in Google Asylo
CVE-2020-8936
An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within sgx_params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.001 (2.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Google Asylo
- Google Llc Asylo — versions 0.6.0
Weakness classification (CWE)
References
- github.com/google/asylo/commit/83036fd841d33baa7e039f842d131aa7881fdcc2 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8936?
- CVE-2020-8936 is a medium-severity vulnerability in Google Asylo, classified under Out-of-bounds Read. CVSS score: 5.3/10. Published 2020-12-15.
- How severe is CVE-2020-8936?
- Medium severity. CVSS v3 base score is 5.3 out of 10.