CVE-2016-6172 Denial of service in n/a

What is CVE-2016-6172?

CVE-2016-6172 is a medium-severity denial of service vulnerability in Opensuse Leap, published on 26 Sep 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

PowerDNS (aka pdns) Authoritative Server before 4.0.1 allows remote primary DNS servers to cause a denial of service (memory exhaustion and secondary DNS server crash) via a large (1) AXFR or (2) IXFR response.

Weakness: CWE-400

Which versions are affected by CVE-2016-6172?

It affects 3 products.

Products include Opensuse Leap, Opensuse Opensuse, Powerdns Authoritative Server.

How do I fix CVE-2016-6172?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2016-6172 being exploited?

There is no known exploitation of CVE-2016-6172 in the wild and no public exploit code.

Other vulnerabilities in Opensuse Leap

• CVE-2015-4902 Oracle Java SE Integrity Check Exploited Medium 5.3
• CVE-2017-14804 package builds could use directory traversal to write outside of target area Critical 9.9
• CVE-2019-20787 Teeworlds before 0.7.4 has an integer overflow when computing a tilemap size. Critical 9.8
• CVE-2019-8341 Code injection in n/a Critical 9.8
• CVE-2019-6438 Other in n/a Critical 9.8

All Opensuse Leap vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-6172, GHSA-fr33-w8fm-p45j, UBUNTU-CVE-2016-6172.