Vulnerability · Published Jun 8, 2021 · Assigned by Google

CVE-2021-22548Arbitrary enclave memory overread vulnerability in Asylo TrustedPrimitives::UntrustedCall

Medium 6.5

In plain English

A medium-severity security flaw in Asylo from Google LLC. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.1%top 98.2% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

An attacker can change the pointer to untrusted memory to point to trusted memory region which causes copying trusted memory to trusted memory, if the latter is later copied out, it allows for reading of memory regions from the trusted region. It is recommended to update past 0.6.2 or git commit https://github.com/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c

Affected products (as reported)

Vendor	Product	Versions
Google LLC	Asylo	unspecified – through 0.6.2

Weakness: CWE-788 · Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

References

https://github.com/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c x_refsource_MISC