CVE-2017-16227 Denial of service in n/a

What is CVE-2017-16227?

CVE-2017-16227 is a high-severity denial of service vulnerability in Debian Debian Linux, published on 29 Oct 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The aspath_put function in bgpd/bgp_aspath.c in Quagga before 1.2.2 allows remote attackers to cause a denial of service (session drop) via BGP UPDATE messages, because AS_PATH size calculation for long paths counts certain bytes twice and consequently constructs an invalid message.

Weakness: CWE-20

Which versions are affected by CVE-2017-16227?

It affects 2 products.

Products include Debian Debian Linux, Quagga Quagga.

How do I fix CVE-2017-16227?

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-2017-16227 being exploited?

There is no known exploitation of CVE-2017-16227 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 ALPINE-CVE-2017-16227, CVE-2017-1000435, DLA-1152-1, DSA-4011-1, GHSA-8c9w-x87p-jr8v, MGASA-2017-0416 and 1 more.