Medium severity · published Dec 15, 2020
CVE-2020-8944
An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to ecall_restore using the attribute output which fails to check…
5.5
CVSS
0.2%
EPSS
No
On KEV
Description
An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to ecall_restore using the attribute output which fails to check the range of a pointer. An attacker can use this pointer to write to arbitrary memory addresses including those within the secure enclave We recommend upgrading past commit 382da2b8b09cbf928668a2445efb778f76bd9c8a
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 5% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AS
Asylo · Google
through 0.6.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-8944
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-8944
Exploit
https://github.com/google/asylo/commit/382da2b8b09cbf928668a2445efb778f76bd9c8a
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