# CVE-2006-0987: Denial of service in n/a

> Remote attackers can cause denial of service via traffic amplification using spoofed DNS queries against default caching name server configurations.

- **Severity:** Medium 5.0 (`AV:N/AC:L/Au:N/C:N/I:N/A:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Mar 2006
- **Updated:** 9 Oct 2026
- **Also known as:** DEBIAN-CVE-2006-0987, GHSA-rmj9-c82h-2f4h

## What is CVE-2006-0987?

CVE-2006-0987 is a medium-severity denial of service vulnerability in Isc Bind, published on 3 Mar 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The default configuration of ISC BIND before 9.4.1-P1, when configured as a caching name server, allows recursive queries and provides additional delegation information to arbitrary IP addresses, which allows remote attackers to cause a denial of service (traffic amplification) via DNS queries with spoofed source IP addresses.

## Which versions are affected by CVE-2006-0987?

It affects 1 product.


Products: Isc Bind.

## How do I fix CVE-2006-0987?

Upgrade to a fixed version.

## Is CVE-2006-0987 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-0987 exists.

Public exploit code:

- This script checks if each domain from a given domain list is vulnerable to CVE-2006-0987 (github_poc): https://github.com/pcastagnaro/dns_amplification_scanner
- DNS Amplification Scanner (metasploit)

## Other vulnerabilities in Isc Bind

- [CVE-2008-0122](https://insights.sbomify.com/CVE-2008-0122/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0010](https://insights.sbomify.com/CVE-2001-0010/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0011](https://insights.sbomify.com/CVE-2001-0011/): Memory corruption in n/a (critical 10.0)
- [CVE-2001-0013](https://insights.sbomify.com/CVE-2001-0013/): Memory corruption in n/a (critical 10.0)
- [CVE-2000-1029](https://insights.sbomify.com/CVE-2000-1029/): Memory corruption in n/a (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2006-0987 and fix it if it is affected.

What it is: CVE-2006-0987 is a medium-severity denial of service vulnerability in Isc Bind, published on 3 Mar 2006. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2006-0987 exists.

Affected product: Isc 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/CVE-2006-0987/ (Markdown: https://insights.sbomify.com/CVE-2006-0987/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2006-0987
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2006-0987
- OSV: https://osv.dev/vulnerability/CVE-2006-0987

---
From sbomify Insights: https://insights.sbomify.com/CVE-2006-0987/
Summaries are generated and may contain mistakes; the official description above is the record.