CVE-2017-9104 Denial of service in n/a
An attacker can cause the adns library to hang and consume CPU resources by sending a crafted DNS response with a compression pointer loop.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-9104?
CVE-2017-9104 is a critical denial of service vulnerability in Fedoraproject Fedora, published on 18 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in adns before 1.5.2. It hangs, eating CPU, if a compression pointer loop is encountered.
Weakness: CWE-400
Which versions are affected by CVE-2017-9104?
It affects 3 products.
Products include Fedoraproject Fedora, Gnu Adns, Opensuse Leap.
How do I fix CVE-2017-9104?
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-2017-9104 being exploited?
There is no known exploitation of CVE-2017-9104 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2017-9104, GHSA-865c-hm43-j28h, UBUNTU-CVE-2017-9104.