---
title: "CVE-2007-2241: Sequence of queries can cause a recursive nameserver to exit"
slug: "aa-00919"
description: "A sequence of queries can cause a recursive nameserver to exit. While it is unlikely these will occur in normal operation, an attack can use them to cause the affected versions to exit. This attack is a denial of service, and does not allow an attacker to gain control of affected systems."
updated: 2025-03-24T21:55:51Z
published: 2025-03-24T21:55:51Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://kb.isc.org/llms.txt
> Use this file to discover all available pages before exploring further.

# CVE-2007-2241: Sequence of queries can cause a recursive nameserver to exit

CVE:

[CVE-2007-2241](http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2007-2241) [VU#718460](http://www.kb.cert.org/vuls/id/718460)

Posting date:

30 April 2007

Program Impacted:

[BIND](https://www.isc.org/software/bind)

Versions affected:

9.4.0 and Alpha releases of 9.5.0

Severity:

High

Exploitable:

Remotely

**Description:**

A sequence of queries can cause a recursive nameserver to exit. While it is unlikely these will occur in normal operation, an attack can use them to cause the affected versions to exit. This attack is a denial of service, and does not allow an attacker to gain control of affected systems.

**Workarounds:**

Disable recursion ('recursion no;' set in named.conf) if it is not required by your configuration.

**Active exploits:**

None known at this time.

**Solution:**

Upgrade to BIND 9.4.1 or BIND 9.5.0.

**Related Documents:**

See our [BIND Security Matrix](https://kb.isc.org/docs/aa-00913) for a complete listing of Security Vulnerabilities and versions affected.

If you'd like more information on our Forum or product support please visit [www.isc.org/support](http://www.isc.org/support).

**Do you still have questions?** Questions regarding this advisory should go to [security-officer@isc.org](mailto:security-officer@isc.org)

**Note:** ISC patches only [currently supported versions](http://www.isc.org/software/bind/versions). When possible we indicate EOL versions affected.

**ISC Security Vulnerability Disclosure Policy:** Details of our current security advisory policy and practice can be found here: [https://www.isc.org/security-vulnerability-disclosure-policy](https://www.isc.org/security-vulnerability-disclosure-policy)

This Knowledge Base article [https://kb.isc.org/docs/aa-00919](https://kb.isc.org/docs/aa-00919) is the complete and official security advisory document.

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