CVE-2020-8937: Arbitrary enclave memory location write from untrusted environment
First published: Tue Dec 15 2020(Updated: )
An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to enc_untrusted_create_wait_queue that uses a pointer queue that relies on UntrustedLocalMemcpy, which fails to validate where the pointer is located. This allows an attacker to write memory values from within the enclave. We recommend upgrading past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02
Credit: cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Google Products | <=0.6.0 |
Remedy
Upgrade past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02
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Frequently Asked Questions
What is the severity of CVE-2020-8937?
CVE-2020-8937 has a high severity rating due to the potential for arbitrary memory overwrite.
How do I fix CVE-2020-8937?
To fix CVE-2020-8937, upgrade Asylo to version 0.6.1 or later to mitigate the vulnerability.
What software is affected by CVE-2020-8937?
CVE-2020-8937 affects all versions of Google Asylo up to and including 0.6.0.
What kind of attack can exploit CVE-2020-8937?
CVE-2020-8937 can be exploited by an attacker to perform arbitrary memory overwrites.
Is CVE-2020-8937 under active exploitation?
There is no public information suggesting that CVE-2020-8937 is currently being actively exploited.
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