# ALEA-2021:2421: libpq bug fix and enhancement update


- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Fix available:** Yes
- **Published:** 14 Jun 2021

## What is ALEA-2021:2421?

ALEA-2021:2421 is a vulnerability in libpq, published on 14 Jun 2021. 

### Official description

The libpq package provides the PostgreSQL client library, which allows client
programs to connect to PostgreSQL servers.

The following packages have been upgraded to a later upstream version: libpq
(13.3). (BZ#1966205)

## Which versions are affected by ALEA-2021:2421?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `libpq` | AlmaLinux:8 | All versions | 13.3-1.el8_4 |
| `libpq-devel` | AlmaLinux:8 | All versions | 13.3-1.el8_4 |

## How do I fix ALEA-2021:2421?

Upgrade to a fixed version.

## Is ALEA-2021:2421 being exploited?

There is no known exploitation of ALEA-2021:2421 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for ALEA-2021:2421 and fix it if it is affected.

What it is: ALEA-2021:2421 is a vulnerability in libpq, published on 14 Jun 2021. 
Exploitation: There is no known exploitation of ALEA-2021:2421 in the wild and no public exploit code.

Affected product: libpq. No package-level version data is available, so check the vendor advisory linked from the reference page.

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/ALEA-2021-2421/ (Markdown: https://insights.sbomify.com/ALEA-2021-2421/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/ALEA-2021:2421

---
From sbomify Insights: https://insights.sbomify.com/ALEA-2021-2421/
Summaries are generated and may contain mistakes; the official description above is the record.