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CVE-2020-15114

Published: 6 August 2020

In etcd before versions 3.3.23 and 3.4.10, the etcd gateway is a simple TCP proxy to allow for basic service discovery and access. However, it is possible to include the gateway address as an endpoint. This results in a denial of service, since the endpoint can become stuck in a loop of requesting itself until there are no more available file descriptors to accept connections on the gateway.

Priority

Medium

Cvss 3 Severity Score

7.7

Score breakdown

Status

Package Release Status
etcd
Launchpad, Ubuntu, Debian
bionic
Released (3.2.17+dfsg-1ubuntu0.1~esm1)
focal
Released (3.2.26+dfsg-6ubuntu0.1)
groovy Ignored
(reached end-of-life)
hirsute Ignored
(reached end-of-life)
impish Not vulnerable
(3.3.23)
jammy Not vulnerable
(3.3.23)
kinetic Not vulnerable
(3.3.23)
precise Does not exist

trusty Does not exist

upstream
Released (3.3.23, 3.4.10)
xenial Needs triage

Patches:
upstream: https://github.com/etcd-io/etcd/commit/f6b822dfe85c9f004c7188496e8573bdaa582260 (3.3.23)

Severity score breakdown

Parameter Value
Base score 7.7
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Changed
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H