# CVE-2020-15112: etcd: 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 i...

CVE-2020-15112 is fixed in 4 products on 1 platform, first by etcd 3.2.17+dfsg-1ubuntu0.1~esm1, released August 6, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-15112
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0126
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 5, 2020

## Description

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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | etcd Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1~esm1 | [etcd 3.2.17+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-etcd-3.2.17-dfsg-1ubuntu0.1-esm1.md) | Aug 6, 2020 |
| Linux | etcd Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.1 | [etcd 3.2.26+dfsg-6ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-etcd-3.2.26-dfsg-6ubuntu0.1.md) | Aug 6, 2020 |
| Linux | etcd opensuse-leap 15.6 | 3.5.12-150000.7.6.1 | [SUSE-SU-2024:3656-1](https://patchblox.com/security/data/fix/linux/suse-su-2024-3656-1.md) | Oct 16, 2024 |
| Linux | etcd-client Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1~esm1 | [etcd-client 3.2.17+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-etcd-client-3.2.17-dfsg-1ubuntu0.1-esm1.md) | Aug 6, 2020 |
| Linux | etcd-client Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.1 | [etcd-client 3.2.26+dfsg-6ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-etcd-client-3.2.26-dfsg-6ubuntu0.1.md) | Aug 6, 2020 |
| Linux | etcd-server Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1~esm1 | [etcd-server 3.2.17+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-etcd-server-3.2.17-dfsg-1ubuntu0.1-esm1.md) | Aug 6, 2020 |
| Linux | etcd-server Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.1 | [etcd-server 3.2.26+dfsg-6ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-etcd-server-3.2.26-dfsg-6ubuntu0.1.md) | Aug 6, 2020 |
| Linux | golang-etcd-server-dev Ubuntu 18.04.6 LTS (bionic) | 3.2.17+dfsg-1ubuntu0.1~esm1 | [golang-etcd-server-dev 3.2.17+dfsg-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-golang-etcd-server-dev-3.2.17-dfsg-1ubuntu0.1-esm1.md) | Aug 6, 2020 |
| Linux | golang-etcd-server-dev Ubuntu 20.04 LTS (focal) | 3.2.26+dfsg-6ubuntu0.1 | [golang-etcd-server-dev 3.2.26+dfsg-6ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-golang-etcd-server-dev-3.2.26-dfsg-6ubuntu0.1.md) | Aug 6, 2020 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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