PT-2020-20374
CVE-2020-8936
·
Published
2020-12-15
·
Updated
2020-12-18
Description by
CVSS 3.1
5.5
MediumMetricsAV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions
Asylo versions up to 0.6.0
Description
An arbitrary memory overwrite issue allows an attacker to make a host call to UntrustedCall. UntrustedCall failed to validate the buffer range within
sgx params and allowed the host to return a pointer that was an address within the enclave memory. This allowed an attacker to read memory values from within the enclave.Recommendations
For Asylo versions up to 0.6.0, update to a version later than 0.6.0 to resolve the issue. As a temporary workaround, consider restricting access to the UntrustedCall function to minimize the risk of exploitation.
Found an issue in the description? Have something to add? Feel free to write us 👾