Bug 1411387 (CVE-2016-9778) - CVE-2016-9778 bind: assertion failure while handling certain queries using the nxdomain-redirect feature
Summary: CVE-2016-9778 bind: assertion failure while handling certain queries using th...
Status: CLOSED NOTABUG
Alias: CVE-2016-9778
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: impact=important,public=20170111,repo...
Keywords: Security
Depends On:
Blocks: 1411339
TreeView+ depends on / blocked
 
Reported: 2017-01-09 15:33 UTC by Dhiru Kholia
Modified: 2019-06-08 21:42 UTC (History)
2 users (show)

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Clone Of:
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Last Closed: 2017-01-12 08:23:28 UTC


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Description Dhiru Kholia 2017-01-09 15:33:13 UTC
An error handling certain queries using the nxdomain-redirect feature could cause a REQUIRE assertion failure in db.c.

An error in handling certain queries can cause an assertion failure when a server is using the nxdomain-redirect feature to cover a zone for which it is also providing authoritative service. A vulnerable server could be intentionally stopped by an attacker if it was using a configuration that met the criteria for the vulnerability and if the attacker could cause it to accept a query that possessed the required attributes.

Note that this vulnerability affects the "nxdomain-redirect" feature, which is one of two methods of handling NXDOMAIN redirection, and is only available in certain versions of BIND. Redirection using zones of type "redirect" is not affected by this vulnerability.

This description is borrowed from the upstream advisory.

Comment 1 Dhiru Kholia 2017-01-09 15:33:21 UTC
Acknowledgments:

Name: ISC

Comment 2 Martin Prpič 2017-01-12 08:09:46 UTC
External References:

https://kb.isc.org/article/AA-01442/0


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