CVE-2020-8940
CVE-2020-8940 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 read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_recvmsg using an attacker controlled result parameter. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading or past commit fa6485c5d16a7355eab047d4a44345a73bc9131e
Frequently asked questions
- What is CVE-2020-8940?
- An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_recvmsg using an attacker controlled result parameter. The parameter size is unchecked allowing the attacker to read memory locations outside of the intended buffer size including memory addresses within the secure enclave. We recommend upgrading or past commit fa6485c5d16a7355eab047d4a44345a73bc9131e
- How severe is CVE-2020-8940?
- CVE-2020-8940 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-2020-8940 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-2020-8940?
- CVE-2020-8940 affects Google Asylo. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-8940?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2020-8940 published?
- CVE-2020-8940 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
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- 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…
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- 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 →
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