Linux Security
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Debian: DSA-3664-1: pdns security update

Date 10 Sep 2016
134
Posted By LinuxSecurity Advisories
Multiple vulnerabilities have been discovered in pdns, an authoritative DNS server. The Common Vulnerabilities and Exposures project identifies the following problems:

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Debian Security Advisory DSA-3664-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                     Salvatore Bonaccorso
September 10, 2016                    https://www.debian.org/security/faq
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Package        : pdns
CVE ID         : CVE-2016-5426 CVE-2016-5427 CVE-2016-6172
Debian Bug     : 830808

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

CVE-2016-5426 / CVE-2016-5427

    Florian Heinz and Martin Kluge reported that the PowerDNS
    Authoritative Server accepts queries with a qname's length larger
    than 255 bytes and does not properly handle dot inside labels. A
    remote, unauthenticated attacker can take advantage of these flaws
    to cause abnormal load on the PowerDNS backend by sending specially
    crafted DNS queries, potentially leading to a denial of service.

CVE-2016-6172

    It was reported that a malicious primary DNS server can crash a
    secondary PowerDNS server due to improper restriction of zone size
    limits. This update adds a feature to limit AXFR sizes in response
    to this flaw.

For the stable distribution (jessie), these problems have been fixed in
version 3.4.1-4+deb8u6.

We recommend that you upgrade your pdns packages.

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

Mailing list: This email address is being protected from spambots. You need JavaScript enabled to view it.

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