Medium severity · published Feb 22, 2022
CVE-2022-23606
Envoy is an open source edge and service proxy, designed for cloud-native applications
6.5
CVSS
1%
EPSS
No
On KEV
Description
Envoy is an open source edge and service proxy, designed for cloud-native applications. When a cluster is deleted via Cluster Discovery Service (CDS) all idle connections established to endpoints in that cluster are disconnected. A recursion was introduced in the procedure of disconnecting idle connections that can lead to stack exhaustion and abnormal process termination when a cluster has a large number of idle connections. This infinite recursion causes Envoy to crash. Users are advised to upgrade.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.0% · higher than 63% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EN
Envoy · Envoyproxy
1.20.0 before 1.20.2; 1.21.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-23606
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-23606
Patch
https://github.com/envoyproxy/envoy/commit/4b6dd3b53cd5c6d4d4df378a2fc62c1707522b31
Issue Tracking
https://github.com/envoyproxy/envoy/security/advisories/GHSA-9vp2-4cp7-vvxf
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