CVE-2020-8938
CVE-2020-8938 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-787.
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-787
- 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 FromkLinuxSockAddr with attacker controlled content and size of klinux_addr which allows an attacker to write memory values from within the enclave. We recommend upgrading past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02
Frequently asked questions
- What is CVE-2020-8938?
- An arbitrary memory overwrite vulnerability in Asylo versions up to 0.6.0 allows an attacker to make a host call to FromkLinuxSockAddr with attacker controlled content and size of klinux_addr which allows an attacker to write memory values from within the enclave. We recommend upgrading past commit a37fb6a0e7daf30134dbbf357c9a518a1026aa02
- How severe is CVE-2020-8938?
- CVE-2020-8938 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-2020-8938 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-2020-8938?
- CVE-2020-8938 affects Google Asylo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-8938?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8938 published?
- CVE-2020-8938 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…
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