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CVE-2017-16227

Publication date 29 October 2017

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

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.

Status

Package Ubuntu Release Status
quagga 17.10 artful
Fixed 1.1.1-3ubuntu0.1
17.04 zesty
Fixed 1.1.1-1ubuntu0.1
16.04 LTS xenial
Fixed 0.99.24.1-2ubuntu1.3
14.04 LTS trusty
Fixed 0.99.22.4-3ubuntu1.4

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
quagga

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H