USN-3471-1: Quagga vulnerabilities

31 October 2017

quagga vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.10
  • Ubuntu 17.04
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Quagga.

Software Description

  • quagga - BGP/OSPF/RIP routing daemon

Details

Andreas Jaggi discovered that Quagga incorrectly handled certain BGP UPDATE messages. A remote attacker could possibly use this issue to cause Quagga to crash, resulting in a denial of service. (CVE-2017-16227)

Quentin Young discovered that Quagga incorrectly handled memory in the telnet vty CLI. An attacker able to connect to the telnet interface could possibly use this issue to cause Quagga to consume memory, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2017-5495)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10
quagga - 1.1.1-3ubuntu0.1
quagga-bgpd - 1.1.1-3ubuntu0.1
Ubuntu 17.04
quagga - 1.1.1-1ubuntu0.1
quagga-bgpd - 1.1.1-1ubuntu0.1
Ubuntu 16.04 LTS
quagga - 0.99.24.1-2ubuntu1.3
Ubuntu 14.04 LTS
quagga - 0.99.22.4-3ubuntu1.4

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to restart Quagga to make all the necessary changes.

References