Bug 708301 - (CVE-2011-1910) CVE-2011-1910 bind: Large RRSIG RRsets and Negative Caching can crash named
CVE-2011-1910 bind: Large RRSIG RRsets and Negative Caching can crash named
Status: CLOSED ERRATA
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
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Assigned To: Red Hat Product Security
http://web.nvd.nist.gov/view/vuln/det...
impact=important,source=internet,publ...
: Security
: 708296 (view as bug list)
Depends On: 708308 708309 708322 708323 833875
Blocks:
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Reported: 2011-05-27 04:08 EDT by Mark J. Cox (Product Security)
Modified: 2012-06-20 09:59 EDT (History)
6 users (show)

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Doc Type: Bug Fix
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Last Closed: 2011-06-28 05:58:28 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description Mark J. Cox (Product Security) 2011-05-27 04:08:03 EDT
Common Vulnerabilities and Exposures assigned an identifier CVE-2011-1910 to the following vulnerability:

A BIND 9 DNS server set up to be a caching resolver is vulnerable to a user querying a domain with very large resource record sets (RRSets) when trying to negatively cache a response. This can cause the BIND 9 DNS server (named process) to crash. 

http://www.isc.org/software/bind/advisories/cve-2011-1910
Comment 1 Mark J. Cox (Product Security) 2011-05-27 04:08:44 EDT
*** Bug 708296 has been marked as a duplicate of this bug. ***
Comment 4 Mark J. Cox (Product Security) 2011-05-27 05:58:55 EDT
Statement:

This issue did not affect bind packages shipped with Red Hat Enterprise Linux 4 and 5. It affected bind97 packages shipped with Red Hat Enterprise Linux 5 and bind packages shipped with Red Hat Enterprise Linux 6.
Comment 5 errata-xmlrpc 2011-05-31 10:53:01 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 5
  Red Hat Enterprise Linux 6

Via RHSA-2011:0845 https://rhn.redhat.com/errata/RHSA-2011-0845.html
Comment 6 Usman Ahmad 2011-06-03 02:52:51 EDT
How can i verify that my current BIND version (9.4.3-P3) is affected by the bug reported in CVE-2011-1910. ?? 

Please guide
Comment 7 Vincent Danen 2011-06-14 15:18:05 EDT
You will need to look at the upstream advisory to find that information out.  We do not ship BIND 9.4.3 in any products, so we have not done any investigation as to whether or not it is vulnerable (it does look like some versions of 9.4 may be vulnerable, judging from the upstream advisory page).
Comment 8 Usman Ahmad 2011-06-28 05:32:08 EDT
Is there any command or stress tool by which i can check that my DNS service is vulnerable or not?
Comment 9 Adam Tkac 2011-06-28 05:54:56 EDT
(In reply to comment #8)
> Is there any command or stress tool by which i can check that my DNS service is
> vulnerable or not?

There is no tool for such checks. However I checked 9.4.3-P3 source and this version is NOT vulnerable.

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