# SUSE-SU-2021:0689-1: Security update for bind

> SUSE patched BIND to prevent dnssec-keygen from generating HMAC keys, requiring users to switch to tsig-keygen for secure key generation.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 2 Mar 2021

## What is SUSE-SU-2021:0689-1?

SUSE-SU-2021:0689-1 is a vulnerability in bind, published on 2 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

This update for bind fixes the following issues:

- dnssec-keygen can no longer generate HMAC keys. Use tsig-keygen instead. [bsc#1180933]

## Which versions are affected by SUSE-SU-2021:0689-1?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `bind` | SUSE:Enterprise Storage 6 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise High Performance Computing 15 SP1-ESPOS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise High Performance Computing 15-ESPOS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise High Performance Computing 15-LTSS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Module for Basesystem 15 SP2 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Module for Server Applications 15 SP2 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Server 15 SP1-BCL | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Server 15-LTSS | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Server for SAP Applications 15 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Manager Proxy 4.0 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Manager Retail Branch Server 4.0 | All versions | 9.16.6-12.44.1 |
| `bind` | SUSE:Manager Server 4.0 | All versions | 9.16.6-12.44.1 |

## How do I fix SUSE-SU-2021:0689-1?

Apply the vendor's patch.

## Is SUSE-SU-2021:0689-1 being exploited?

There is no known exploitation of SUSE-SU-2021:0689-1 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for SUSE-SU-2021:0689-1 and fix it if it is affected.

What it is: SUSE-SU-2021:0689-1 is a vulnerability in bind, published on 2 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of SUSE-SU-2021:0689-1 in the wild and no public exploit code.

Affected product: bind. 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/SUSE-SU-2021-0689-1/ (Markdown: https://insights.sbomify.com/SUSE-SU-2021-0689-1/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/SUSE-SU-2021:0689-1

---
From sbomify Insights: https://insights.sbomify.com/SUSE-SU-2021-0689-1/
Summaries are generated and may contain mistakes; the official description above is the record.