CVE-2017-16227
quagga - security update
7.5
HIGH
CVSS 3.1
EPSS 0.77%
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.
How to fix CVE-2017-16227
To remediate CVE-2017-16227, upgrade the affected package to a fixed version below.
- —upgrade to 0.99.24.1-r6 or later
- —upgrade to 0.99.22.4-1+wheezy3+deb7u2 or later
- —upgrade to 0.99.23.1-1+deb8u4 or later
Is CVE-2017-16227 being exploited?
Low — EPSS is 0.8%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 0.99.24.1-r6
- from 0, < 0.99.22.4-1+wheezy3+deb7u2
- from 0, < 0.99.23.1-1+deb8u4
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |