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Vulnerability CVE-2020-8904
Published: 2020-08-12
| 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. |
Type:
CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)
CVSS2 => (AV:N/AC:L/Au:S/C:N/I:P/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5.5/10 |
4.9/10 |
8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
None |
Partial |
Partial |
References: |
https://github.com/google/asylo/commit/e582f36ac49ee11a21d23ad6a30c333092e0a94e
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