CVE-2021-22549 Arbitrary enclave memory overwrite vulnerability in Asylo TrustedPrimitives::UntrustedCall
An attacker can overwrite arbitrary trusted memory in Asylo, potentially leading to code execution or privilege escalation within the enclave.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-22549?
CVE-2021-22549 is a medium-severity memory corruption vulnerability in Google LLC Asylo, published on 8 Jun 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
An attacker can modify the address to point to trusted memory to overwrite arbitrary trusted memory. It is recommended to update past 0.6.2 or git commit https://github.com/google/asylo/commit/53ed5d8fd8118ced1466e509606dd2f473707a5c
Which versions are affected by CVE-2021-22549?
It affects 1 product.
Products include Google Asylo.
How do I fix CVE-2021-22549?
No fix has been published for CVE-2021-22549 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2021-22549 being exploited?
There is no known exploitation of CVE-2021-22549 in the wild and no public exploit code.
Other vulnerabilities in Google LLC Asylo
- CVE-2021-22548 Arbitrary enclave memory overread vulnerability in Asylo TrustedPrimitives::UntrustedCall
- CVE-2021-22550 Enclave memory overwrite/overread vulnerability in Asylo UntrustedCacheMalloc::GetBuffer
- CVE-2020-8904 Arbitrary trusted memory overwrite vulnerability in Asylo
- CVE-2021-22552 Memory overread secure enclave in Asylo 0.6.2
- CVE-2020-8935 Memory corruption in Asylo
Sources
Also known as GHSA-423w-7xwv-vwqw.