CVE-2007-2925: allow-query-cache/allow-recursion default acls not set

AA-00920

The default access control lists (acls) are not being correctly set.

CVE: 
CVE-2007-2925 
Posting date: 
24 Jul 2007
Program Impacted: 
BIND
Versions affected: 
9.4.0, 9.4.1, 9.5.0a1, 9.5.0a2, 9.5.0a3, 9.5.0a4, 9.5.0a5 
Severity: 
Medium
Exploitable: 
Remotely

Description:

The default access control lists (acls) are not being correctly set. If not set anyone can make recursive queries and/or query the cache contents.

Workarounds:

Explicitly set allow-query-cache and allow-recursion acl's if not already set to:

{ localnets; localhost; };

If recursion is supposed to be allowed to local clients (default).

options {

recursion yes; // default

allow-recursion { localnets; localhost; };

allow-query-cache { localnets; localhost; };

...

};

If recursion is disallowed.

options {

recursion no;

allow-query-cache { localnets; localhost; };

...

};

Active exploits:

None known at this time.

Related Documents:

See our BIND Security Matrix 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.

Do you still have questions?  Questions regarding this advisory should go to security-officer@isc.org

Note: ISC patches only currently supported 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

This Knowledge Base article https://kb.isc.org/article/AA-00920 is the complete and official security advisory document.

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