Updated pdns packages fix security vulnerabilities
Publication date: 02 Feb 2017Modification date: 02 Feb 2017
Type: security
Affected Mageia releases : 5
CVE: CVE-2016-2120 , CVE-2016-7068 , CVE-2016-7072 , CVE-2016-7073 , CVE-2016-7074
Description
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-2016-2120). 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-2016-7068). 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-2016-7072). 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 (CVE-2016-7073, CVE-2016-7074).
References
- https://bugs.mageia.org/show_bug.cgi?id=20126
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-02/
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-03/
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-04/
- https://doc.powerdns.com/md/security/powerdns-advisory-2016-05/
- https://www.debian.org/security/2017/dsa-3764
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-2120
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7068
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7072
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7073
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7074
SRPMS
5/core
- pdns-3.3.3-1.3.mga5