CVE-2015-5146 Denial of service in n/a

What is CVE-2015-5146?

CVE-2015-5146 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 24 Aug 2017. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

ntpd in ntp before 4.2.8p3 with remote configuration enabled allows remote authenticated users with knowledge of the configuration password and access to a computer entrusted to perform remote configuration to cause a denial of service (service crash) via a NULL byte in a crafted configuration directive packet.

Weakness: CWE-20

Which versions are affected by CVE-2015-5146?

It affects 3 products.

Products include Debian Debian Linux, Fedoraproject Fedora, Ntp Ntp.

How do I fix CVE-2015-5146?

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-2015-5146 being exploited?

There is no known exploitation of CVE-2015-5146 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2015-5146, GHSA-8463-8xmw-64wf, UBUNTU-CVE-2015-5146.