# GHSA-528j-9r78-wffx: etcd user credentials are stored in WAL logs in plaintext

> Attackers with local access to WAL logs can read plaintext user credentials, requiring administrators to secure on-disk files.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 6 Oct 2022

## What is GHSA-528j-9r78-wffx?

GHSA-528j-9r78-wffx is a vulnerability in go.etcd.io/etcd/client/v3, published on 6 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

### Vulnerability type
Data Exposure

### Workarounds
The etcd assumes that the on disk files are secure. The possible fixes have been provided, however, it is the responsibility of the etcd users to make sure that the etcd server WAL log files are secure. The [etcd doesn't encrypt key/value data stored on disk drives](https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/security.md#does-etcd-encrypt-data-stored-on-disk-drives).

### Detail
User credentials (login and password) are stored in WAL entries on each user authentication. If the WAL log files are not secure, it can potentially expose sensitive information.

### References
Find out more on this vulnerability in the [security audit report](https://github.com/etcd-io/etcd/blob/master/security/SECURITY_AUDIT.pdf)

### For more information
If you have any questions or comments about this advisory:
* Contact the [etcd security committee](https://github.com/etcd-io/etcd/blob/master/security/security-release-process.md#product-security-committee-psc)

## Which versions are affected by GHSA-528j-9r78-wffx?

4 open source packages ship an affected version, including go.etcd.io/etcd/client/v3.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `go.etcd.io/etcd/client/v3` | Go | All versions | 3.3.23 |
| `go.etcd.io/etcd/client/v3` | Go | All versions | 3.3.23 |
| `go.etcd.io/etcd/client/v3` | Go | From 3.4.0 | 3.4.10 |
| `go.etcd.io/etcd/client/v3` | Go | From 3.4.0 | 3.4.10 |

## How do I fix GHSA-528j-9r78-wffx?

Upgrade go.etcd.io/etcd/client/v3 to a fixed version for your release line: 3.3.23 or 3.4.10.

## Is GHSA-528j-9r78-wffx being exploited?

There is no known exploitation of GHSA-528j-9r78-wffx in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for GHSA-528j-9r78-wffx and fix it if it is affected.

What it is: GHSA-528j-9r78-wffx is a vulnerability in go.etcd.io/etcd/client/v3, published on 6 Oct 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of GHSA-528j-9r78-wffx in the wild and no public exploit code.

Affected packages and fixed versions:
- go.etcd.io/etcd/client/v3 (Go): affected all versions; fixed in 3.3.23
- go.etcd.io/etcd/client/v3 (Go): affected all versions; fixed in 3.3.23
- go.etcd.io/etcd/client/v3 (Go): affected from 3.4.0; fixed in 3.4.10
- go.etcd.io/etcd/client/v3 (Go): affected from 3.4.0; fixed in 3.4.10

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/GHSA-528j-9r78-wffx/ (Markdown: https://insights.sbomify.com/GHSA-528j-9r78-wffx/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/GHSA-528j-9r78-wffx

---
From sbomify Insights: https://insights.sbomify.com/GHSA-528j-9r78-wffx/
Summaries are generated and may contain mistakes; the official description above is the record.