Executive Summary

Summary
Title New bind9 packages fix cache poisoning
Informations
Name DSA-1961 First vendor Publication 2009-12-23
Vendor Debian Last vendor Modification 2009-12-23
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
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Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:H/Au:N/C:N/I:P/A:N)
Cvss Base Score 2.6 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity High
Cvss Expoit Score 4.9 Authentication None Required
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Detail

Michael Sinatra discovered that the DNS resolver component in BIND does not properly check DNS records contained in additional sections of DNS responses, leading to a cache poisoning vulnerability. This vulnerability is only present in resolvers which have been configured with DNSSEC trust anchors, which is still rare.

Note that this update contains an internal ABI change, which means that all BIND-related packages (bind9, dnsutils and the library packages) must be updated at the same time (preferably using "apt-get update" and "apt-get upgrade"). In the unlikely event that you have compiled your own software against libdns, you must recompile this programs, too.

For the old stable distribution (etch), this problem has been fixed in version 9.3.4-2etch6.

For the stable distribution (lenny), this problem has been fixed in version 9.5.1.dfsg.P3-1+lenny1.

For the unstable distribution (sid) and the testing distribution (squeeze), this problem has been fixed in version 9.6.1.dfsg.P2-1.

We recommend that you upgrade your bind9 packages.

Original Source

Url : http://www.debian.org/security/2009/dsa-1961

Alert History

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0
1
2
Date Informations
2016-04-05 00:27:19
  • Multiple Updates
2014-02-17 11:29:06
  • Multiple Updates
2013-05-11 00:43:39
  • Multiple Updates