CVE-2017-15133 Denial of Service in miekg-dns
A remote attacker can block the DNS server from accepting new connections by sending carefully timed TCP packets, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-15133?
CVE-2017-15133 is a high-severity denial of service vulnerability in miekg-dns, published on 29 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A denial of service flaw was found in miekg-dns before 1.0.4. A remote attacker could use carefully timed TCP packets to block the DNS server from accepting new connections.
Weakness: CWE-400
Which versions are affected by CVE-2017-15133?
3 open source packages ship an affected version, including github.com/miekg/dns. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
github.com/miekg/dns Go | All versions | 1.0.4 |
github.com/miekg/dns Go | All versions | 1.0.4 |
github.com/miekg/dns Go | All versions | 1.0.4-0.20180125103619-43913f2f4fbd |
Products include Miekg-Dns Prject Miekg-Dns.
How do I fix CVE-2017-15133?
Upgrade github.com/miekg/dns to a fixed version for your release line: 1.0.4 or 1.0.4-0.20180125103619-43913f2f4fbd.
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-2017-15133 being exploited?
There is no known exploitation of CVE-2017-15133 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2017-15133, GHSA-p55x-7x9v-q8m4, GO-2020-0006.