CVE-2020-8904
Last modified
CVE-2020-8904 is a critical-severity vulnerability rated 9.6/10 on the CVSS scale. 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. EPSS estimates a 0.23% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Asylo | < 0.6.0 |
References
- https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94ePatch, Third Party Advisory
- https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94ePatch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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