Linux Security
Linux Security
Linux Security

Ubuntu 4610-1: fastd vulnerability

Date 29 Oct 2020
233
Posted By LinuxSecurity Advisories
fastd could be made to remotely exhaust resources if it received specially crafted packets.
==========================================================================
Ubuntu Security Notice USN-4610-1
October 29, 2020

fastd vulnerability
==========================================================================

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

- Ubuntu 20.04 LTS

Summary:

fastd could be made to remotely exhaust resources if it received
specially crafted packets.

Software Description:
- fastd: Fast and Secure Tunneling Daemon

Details:

It was discovered that fastd did not properly handle receive buffers
under certain circumstances. A remote attacker could possibly use this
issue to cause a memory leak, resulting in a denial of service.
(CVE-2020-27638)

Update instructions:

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

Ubuntu 20.04 LTS:
  fastd                           18-3ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4610-1
  CVE-2020-27638

Package Information:
  https://launchpad.net/ubuntu/+source/fastd/18-3ubuntu0.1

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[{"id":"179","title":"As soon as patches\/updates are released - I track advisories for my distro(s) diligently","votes":"47","type":"x","order":"1","pct":79.66,"resources":[]},{"id":"180","title":"Every so often, when I think of it","votes":"7","type":"x","order":"2","pct":11.86,"resources":[]},{"id":"181","title":"Hardly ever","votes":"5","type":"x","order":"3","pct":8.47,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

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