Buffer overflow in Google Asylo
CVE-2020-8943
An arbitrary memory read vulnerability in Asylo versions up to 0.6.0 allows an untrusted attacker to make a call to enc_untrusted_recvfrom whose return size was not validated against the requested size. 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 past commit 6e158d558abd3c29a0208e30c97c9a8c5bd4230f
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.001 (2.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 2nd percentile — 2.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.001 · change: +0.000
Affected products
- Google Asylo
- Google Llc Asylo — versions unspecified
Weakness classification (CWE)
References
- github.com/google/asylo/commit/6e158d558abd3c29a0208e30c97c9a8c5bd4230f (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8943?
- CVE-2020-8943 is a medium-severity vulnerability in Google Asylo, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 5.3/10. Published 2020-12-15.
- How severe is CVE-2020-8943?
- Medium severity. CVSS v3 base score is 5.3 out of 10.