Vulnerability in Envoyproxy Envoy
CVE-2021-29258
An issue was discovered in Envoy 1.14.0. There is a remotely exploitable crash for HTTP2 Metadata, because an empty METADATA map triggers a Reachable Assertion.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (77.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.000
Affected products
- Envoyproxy Envoy — versions 1.14.6, 1.15.3, 1.16.2
Weakness classification (CWE)
References
- blog.envoyproxy.io (Vendor Advisory)
- github.com/envoyproxy/envoy-setec/pull/230 (Broken Link)
- github.com/envoyproxy/envoy/releases/tag/v1.14.0 (Third Party Advisory)
- github.com/envoyproxy/envoy/security/advisories/GHSA-xw4q-6pj2-5gfg (Third Party Advisory, Not Applicable)
- github.com/envoyproxy/envoy/security/advisories/GHSA-rqvq-hxw5-776j (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-29258?
- CVE-2021-29258 is a high-severity vulnerability in Envoyproxy Envoy, classified under Reachable Assertion. CVSS score: 7.5/10. Published 2021-05-20.
- How severe is CVE-2021-29258?
- High severity. CVSS v3 base score is 7.5 out of 10.