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CVE-2020-15113

Published: 5 August 2020

In etcd before versions 3.3.23 and 3.4.10, certain directory paths are created (etcd data directory and the directory path when provided to automatically generate self-signed certificates for TLS connections with clients) with restricted access permissions (700) by using the os.MkdirAll. This function does not perform any permission checks when a given directory path exists already. A possible workaround is to ensure the directories have the desired permission (700).

Priority

Medium

Cvss 3 Severity Score

7.1

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 Ignored
(reached end-of-life)
jammy Needed

kinetic Needed

precise Does not exist

trusty Does not exist

upstream
Released (3.3.23, 3.4.10)
xenial Needed

Patches:
upstream: https://github.com/etcd-io/etcd/commit/ac37d3499e965946bd39ee7260a27a0a3e796b14 (3.3.23)

Severity score breakdown

Parameter Value
Base score 7.1
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N