CVE-2019-18836
published 2019-11-11CVE-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…
PriorityP338high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
EPSS
1.94%
77.6th percentile
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."
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| envoyproxy | envoy | — | — |
| istio.io | istio | >= 1.3.0 < 1.3.5 | 1.3.5 |
| istio | istio | >= 1.3 < 1.3.5 | 1.3.5 |
| istio | istio | 1.3.0 – 1.3.3 | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
ghsa7.5HIGH
osv7.5HIGH
vendor_redhat7.5HIGH
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GHSA
GHSA-4r53-8549-7m3r: Envoy before 1
ghsa_unreviewed·2022-05-24
CVE-2019-18836 [MEDIUM] GHSA-4r53-8549-7m3r: Envoy before 1
Envoy before 1.12.1 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.
GHSA
Istio vulnerable to denial of service
ghsa·2022-05-24·CVSS 7.5
CVE-2019-18817 [HIGH] CWE-835 Istio vulnerable to denial of service
Istio vulnerable to denial of service
Istio 1.3.x before 1.3.5 is vulnerable to denial of service because `continue_on_listener_filters_timeout` is set to True, a related issue to CVE-2019-18836.
OSV
Istio vulnerable to denial of service
osv·2022-05-24·CVSS 7.5
CVE-2019-18817 [HIGH] Istio vulnerable to denial of service
Istio vulnerable to denial of service
Istio 1.3.x before 1.3.5 is vulnerable to denial of service because `continue_on_listener_filters_timeout` is set to True, a related issue to CVE-2019-18836.
Red Hat
istio/envoy: infinite loop in Envoy, and subsequently Istio leads to a DoS
vendor_redhat·2019-11-11·CVSS 7.5
CVE-2019-18817 [HIGH] istio/envoy: infinite loop in Envoy, and subsequently Istio leads to a DoS
istio/envoy: infinite loop in Envoy, and subsequently Istio leads to a DoS
Istio 1.3.x before 1.3.5 allows Denial of Service because continue_on_listener_filters_timeout is set to True, a related issue to CVE-2019-18836.
A flaw was found in envoy. When the option `continue_on_listener_filters_timeout` is set to True, an infinite loop can be triggered that could effectively exhaust Envoy's CPU resources causing a denial of service. The highest threat from this vulnerability is to system availability.
Package: envoy (OpenShift Service Mesh 1) - Not affected
Red Hat
envoy: excessive iteration due to listener filter timeout leads to DoS
vendor_redhat·2019-11-11·CVSS 7.5
CVE-2019-18836 [HIGH] CWE-400 envoy: excessive iteration due to listener filter timeout leads to DoS
envoy: excessive iteration due to listener filter timeout leads to DoS
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."
A flaw was found in envoy. When listeners are configured with `continue_on_listener_filters_timeout` true, an infinite busy loop is created if at least one connection is maintained on the loop. A remote attacker only needs to maintain one idle connection to consume one CPU core of the Envoy server, potentially leading to a denial of service attack. The highest threat from this vulnerability is to system availability.
Package: envoy (OpenShift Service Mesh 1) - Not affected
No detection rules found.
No public exploits indexed.
https://blog.envoyproxy.iohttps://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46https://github.com/istio/istio/issues/18229https://groups.google.com/forum/#%21forum/envoy-usershttps://blog.envoyproxy.iohttps://github.com/envoyproxy/envoy/security/advisories/GHSA-3xvf-4396-cj46https://github.com/istio/istio/issues/18229https://groups.google.com/forum/#%21forum/envoy-users
2019-11-11
Published