VulnerabilityModified
CVE-2019-18836
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
HIGH 7.5EPSS 1.94%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.94%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Envoy 1.12.0 allows a remote denial of service because of resource loops, as demonstrated by a single idle TCP connection being able to keep a worker thread in an infinite busy loop when continue_on_listener_filters_timeout is used."
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 1.94% probability · 79th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-835
- Affected
- envoyproxy/envoy · istio/istio
- Source
- cve@mitre.org
References
- https://blog.envoyproxy.ioVendor Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46Exploit, Third Party Advisory
- https://github.com/istio/istio/issues/18229Exploit, Third Party Advisory
- https://groups.google.com/forum/#%21forum/envoy-users
- https://blog.envoyproxy.ioVendor Advisory
- https://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46Exploit, Third Party Advisory
- https://github.com/istio/istio/issues/18229Exploit, Third Party Advisory
- https://groups.google.com/forum/#%21forum/envoy-users
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.