Bug 702701 (CVE-2011-1907) - CVE-2011-1907 bind: RRSIG queries can trigger server crash when using Response Policy Zones (RPZ)
Summary: CVE-2011-1907 bind: RRSIG queries can trigger server crash when using Respons...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2011-1907
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-05-06 16:19 UTC by Vincent Danen
Modified: 2021-02-24 15:29 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-05-06 16:22:46 UTC
Embargoed:


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Description Vincent Danen 2011-05-06 16:19:04 UTC
From the upstream report [1]:

This advisory only affects BIND users who are using the RPZ feature configured for RRset replacement. BIND 9.8.0 introduced Response Policy Zones (RPZ), a mechanism for modifying DNS responses returned by a recursive server according to a set of rules which are either defined locally or imported from a reputation provider. In typical configurations, RPZ is used to force NXDOMAIN responses for untrusted names. It can also be used for RRset replacement, i.e., returning a positive answer defined by the response policy. When RPZ is being used, a query of type RRSIG for a name configured for RRset replacement will trigger an assertion failure and cause the name server process to exit.

[1] http://www.isc.org/CVE-2011-1907


Statement:

Not vulnerable. This issue did not affect the versions of bind as shipped with Red Hat Enterprise Linux 4, 5, or 6 as they did not include support for Response Policy Zones (RPZ).

Comment 1 Vincent Danen 2011-05-06 16:21:33 UTC
This has already been submitted for Fedora:

http://koji.fedoraproject.org/koji/buildinfo?buildID=242681


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