Debian-LTS alert DLA-798-1 (pdns)

From:
    	     
 
Jonas Meurer <mejo@debian.org> 
To:
    	     
 
debian-lts-announce@lists.debian.org 
Subject:
    	     
 
[SECURITY] [DLA 798-1] pdns security update 
Date:
    	     
 
Wed, 25 Jan 2017 22:34:12 +0100
Message-ID:
    	     
 
<b1468126-06ea-7718-d9ec-72588adba86e@debian.org>
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Package        : pdns
Version        : 3.1-4.1+deb7u3
CVE ID         : CVE-2016-2120 CVE-2016-7068 CVE-2016-7072 CVE-2016-7073
                 CVE-2016-7074


Multiple vulnerabilities have been discovered in pdns, an authoritative
DNS server. The Common Vulnerabilities and Exposures project identifies
the following problems:

CVE-2016-2120

    Mathieu Lafon discovered that pdns does not properly validate
    records in zones. An authorized user can take advantage of this flaw
    to crash server by inserting a specially crafted record in a zone
    under their control and then sending a DNS query for that record.

CVE-2016-7068

    Florian Heinz and Martin Kluge reported that pdns parses all records
    present in a query regardless of whether they are needed or even
    legitimate, allowing a remote, unauthenticated attacker to cause an
    abnormal CPU usage load on the pdns server, resulting in a partial
    denial of service if the system becomes overloaded.

CVE-2016-7072

    Mongo discovered that the webserver in pdns is susceptible to a
    denial-of-service vulnerability. A remote, unauthenticated attacker
    to cause a denial of service by opening a large number of f TCP
    connections to the web server.

CVE-2016-7073 / CVE-2016-7074

    Mongo discovered that pdns does not sufficiently validate TSIG
    signatures, allowing an attacker in position of man-in-the-middle to
    alter the content of an AXFR.

For Debian 7 "Wheezy", these problems have been fixed in version
3.1-4.1+deb7u3.

We recommend that you upgrade your pdns packages.

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS

- -- 
Jonas Meurer


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