VulnerabilityModified
CVE-2020-8904
An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0.
CRITICAL 9.6EPSS 0.23%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:H
- EPSS
- 0.23% probability · 14th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-823, CWE-119
- Affected
- google/asylo
- Source
- cve-coordination@google.com
References
- https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94ePatch, Third Party Advisory
- https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94ePatch, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.