CVE-2020-8943: Unchecked buffer overrun in enc_untrusted_recvfrom
First published: Tue Dec 15 2020(Updated: )
An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_recvfrom whose return size was not validated against the requested size. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading past commit 6e158d558abd3c29a0208e30c97c9a8c5bd4230f
Credit: cve-coordination@google.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Google Products | <=0.6.0 |
Remedy
We recommend upgradingpast commit 6e158d558abd3c29a0208e30c97c9a8c5bd4230f
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Frequently Asked Questions
What is the severity of CVE-2020-8943?
CVE-2020-8943 has a medium severity rating due to potential unauthorized memory access.
How do I fix CVE-2020-8943?
To fix CVE-2020-8943, upgrade Google Asylo to versions later than 0.6.0, where the issue has been addressed.
What types of attacks can exploit CVE-2020-8943?
CVE-2020-8943 can be exploited by an untrusted attacker to read arbitrary memory locations, leading to potential data leakage.
Which versions of Asylo are affected by CVE-2020-8943?
CVE-2020-8943 affects all versions of Google Asylo up to and including 0.6.0.
Is there a known workaround for CVE-2020-8943?
There are no known workarounds for CVE-2020-8943; upgrading to a non-vulnerable version is the recommended solution.
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