CVE-2017-3142 An error in TSIG authentication can permit unauthorized zone transfers
An attacker with a valid TSIG key name can bypass authentication to perform unauthorized zone transfers or send bogus NOTIFY packets on BIND DNS servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-3142?
CVE-2017-3142 is a medium-severity authentication bypass vulnerability in Debian Debian Linux, published on 16 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 or accepting bogus NOTIFY packets. Affects BIND 9.4.0->9.8.8, 9.9.0->9.9.10-P1, 9.10.0->9.10.5-P1, 9.11.0->9.11.1-P1, 9.9.3-S1->9.9.10-S2, 9.10.5-S1->9.10.5-S2.
Weakness: CWE-20
Which versions are affected by CVE-2017-3142?
It affects 8 products.
Products include Debian Debian Linux, Isc Bind, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus and 2 more.
How do I fix CVE-2017-3142?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2017-3142 being exploited?
There is no known exploitation of CVE-2017-3142 in the wild and no public exploit code.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2017-3142, DEBIAN-CVE-2017-3142, GHSA-jhf7-373h-xx92, UBUNTU-CVE-2017-3142.