CVE-2015-5695 Designate mDNS DoS through incorrect handling of large RecordSets
Remote attackers can cause a denial of service via infinite loop in OpenStack Designate by exploiting missing quota enforcement during zone transfers.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-5695?
CVE-2015-5695 is a medium-severity denial of service vulnerability in n/a, published on 31 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Designate 2015.1.0 through 1.0.0.0b1 as packaged in OpenStack Kilo does not enforce RecordSets per domain, and Records per RecordSet quotas when processing an internal zone file transfer, which might allow remote attackers to cause a denial of service (infinite loop) via a crafted resource record set.
Weakness: CWE-400
Which versions are affected by CVE-2015-5695?
3 open source packages ship an affected version, including designate. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
designate PyPI | All versions | None |
designate PyPI | All versions | None |
designate PyPI | All versions | None |
Products include Openstack Designate.
How do I fix CVE-2015-5695?
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-2015-5695 being exploited?
There is no known exploitation of CVE-2015-5695 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2015-5695, GHSA-m6h2-634h-jcpj, PYSEC-2017-114.