CVE-2020-8936
CVE-2020-8936 is a medium-severity vulnerability in Google Asylo with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- CVSS v2: 2.1
- EPSS exploit prediction: 0% (3rd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Google Asylo
- Published:
- Last modified:
Description
An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 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.
Frequently asked questions
- What is CVE-2020-8936?
- An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 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.
- How severe is CVE-2020-8936?
- CVE-2020-8936 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2020-8936 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (3rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-8936?
- CVE-2020-8936 affects Google Asylo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-8936?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8936 published?
- CVE-2020-8936 was published on 2020-12-15 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:google:asylo:*:*:*:*:*:*:*:*
More vulnerabilities in Google Asylo
- CVE-2021-22550 — Medium (CVSS 6.5): An attacker can modify the pointers in enclave memory to overwrite arbitrary memory addresses within the secure…
- CVE-2021-22549 — Medium (CVSS 6.5): An attacker can modify the address to point to trusted memory to overwrite arbitrary trusted memory. It is recommended…
- CVE-2021-22548 — Medium (CVSS 6.5): An attacker can change the pointer to untrusted memory to point to trusted memory region which causes copying trusted…
- CVE-2020-8904 — Medium (CVSS 6.4): An arbitrary memory overwrite vulnerability in the trusted memory of Asylo exists in versions prior to 0.6.0. As the…
- CVE-2021-22552 — Medium (CVSS 5.3): An untrusted memory read vulnerability in Asylo versions up to 0.6.1 allows an untrusted attacker to pass a syscall…
- CVE-2020-8944 — Medium (CVSS 5.3): An arbitrary memory write vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to…
All CVEs affecting Google Asylo →
Other CWE-125 (Out-of-bounds Read) vulnerabilities
- CVE-2026-24826 — Critical (CVSS 10.0): Out-of-bounds Write, Divide By Zero, NULL Pointer Dereference, Use of Uninitialized Resource, Out-of-bounds Read,…
- CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
- CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
- CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
- CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…