by Kastro
Paper/Archive/CVE-2020-8904

CVE-2020-8904

Google LLC Asylo — Arbitrary trusted memory overwrite vulnerability in Asylo

EPSS 0.2%CVSS 9.6
critical.is priorityof 100
32
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 14.2.142 × 202.8No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
Asylostable – < 0.6.00.6.0CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Google (CNA)6.4CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:H

References

refgithub.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e