CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
83.7%
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
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 7 | amd64 | pdns-backend-pgsql | < 3.1-4.1+deb7u3 | pdns-backend-pgsql_3.1-4.1+deb7u3_amd64.deb |
Debian | 8 | armhf | pdns-backend-mysql | < 3.4.1-4+deb8u7 | pdns-backend-mysql_3.4.1-4+deb8u7_armhf.deb |
Debian | 8 | powerpc | pdns-backend-pipe | < 3.4.1-4+deb8u7 | pdns-backend-pipe_3.4.1-4+deb8u7_powerpc.deb |
Debian | 7 | armhf | pdns-backend-lua | < 3.1-4.1+deb7u3 | pdns-backend-lua_3.1-4.1+deb7u3_armhf.deb |
Debian | 8 | armel | pdns-backend-lmdb | < 3.4.1-4+deb8u7 | pdns-backend-lmdb_3.4.1-4+deb8u7_armel.deb |
Debian | 8 | s390x | pdns-backend-lmdb | < 3.4.1-4+deb8u7 | pdns-backend-lmdb_3.4.1-4+deb8u7_s390x.deb |
Debian | 7 | amd64 | pdns-server-dbg | < 3.1-4.1+deb7u3 | pdns-server-dbg_3.1-4.1+deb7u3_amd64.deb |
Debian | 8 | mips | pdns-backend-mysql | < 3.4.1-4+deb8u7 | pdns-backend-mysql_3.4.1-4+deb8u7_mips.deb |
Debian | 8 | kfreebsd-amd64 | pdns-server-dbg | < 3.4.1-4+deb8u7 | pdns-server-dbg_3.4.1-4+deb8u7_kfreebsd-amd64.deb |
Debian | 8 | powerpc | pdns-backend-lua | < 3.4.1-4+deb8u7 | pdns-backend-lua_3.4.1-4+deb8u7_powerpc.deb |
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AI Score
Confidence
High
EPSS
Percentile
83.7%