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CVE-2020-15112

Published: 5 August 2020

In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
etcd
Launchpad, Ubuntu, Debian
trusty Does not exist

upstream
Released (3.3.23, 3.4.10)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
jammy Needed

impish Ignored
(end of life)
focal
Released (3.2.26+dfsg-6ubuntu0.1)
kinetic Ignored
(end of life, was needed)
bionic
Released (3.2.17+dfsg-1ubuntu0.1+esm1)
Available with Ubuntu Pro
xenial Needed

lunar Needed

mantic Needed

Patches:
upstream: https://github.com/etcd-io/etcd/pull/12638/commits/b14255c0b4d1a27221d1857ae0e72bcac7f2b146 (3.3.23)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H