Debian Long Term Support / LTS Security Information / 2017 / Security Information -- DLA-1025-1 bind9

Debian Security Advisory

DLA-1025-1 bind9 -- LTS security update

Date Reported:

13 Jul 2017

Affected Packages:

bind9

Vulnerable:

Yes

Security database references:

In Mitre's CVE dictionary: CVE-2017-3142, CVE-2017-3143.

More information:

• CVE-2017-3142

  An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name may be able to circumvent TSIG authentication of AXFR requests via a carefully constructed request packet. A server that relies solely on TSIG keys for protection with no other ACL protection could be manipulated into:

  • providing an AXFR of a zone to an unauthorized recipient
  • accepting bogus NOTIFY packets
• CVE-2017-3143

  An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name for the zone and service being targeted may be able to manipulate BIND into accepting an unauthorized dynamic update.

For Debian 7 Wheezy, these problems have been fixed in version 1:9.8.4.dfsg.P1-6+nmu2+deb7u17.

We recommend that you upgrade your bind9 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