Vulnerability in Envoyproxy Envoy
CVE-2020-8660
CNCF Envoy through 1.13.0 TLS inspector bypass. TLS inspector could have been bypassed (not recognized as a TLS client) by a client using only TLS 1.3. Because TLS extensions (SNI, ALPN) were not inspected, those connections might have been matched to a wrong filter chain, possibly bypassing some security restrictions in the process.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (46.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 46.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.envoyproxy.io/docs/envoy/v1.13.1/intro/version_history (Vendor Advisory)
- github.com/envoyproxy/envoy/security/advisories/GHSA-c4g8-7grc-5wvx (Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0734 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-8660?
- CVE-2020-8660 is a medium-severity vulnerability in Envoyproxy Envoy, classified under Insufficient Verification of Data Authenticity. CVSS score: 5.3/10. Published 2020-03-04.
- How severe is CVE-2020-8660?
- Medium severity. CVSS v3 base score is 5.3 out of 10.