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Ubuntu 20.04 LTS: 4610-1 Critical: Fastd Resource Exhaustion

ubuntu
Calendar Grey October 29, 2020
Dist Ubuntu Esm H88
A vulnerability in fastd found in Ubuntu 20.04 LTS may permit resource exhaustion, potentially resulting in a denial of service. Ensure your system is updated immediately.
fastd could be made to remotely exhaust resources if it received specially crafted packets.

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)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu resource exhaustion fastd

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://ubuntu.com/security/notices/USN-4610-1

CVE-2020-27638

Severity
critical
Lowest
Low
Medium
High
Critical

October 29, 2020

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu resource exhaustion fastd

Package Information

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

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