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Ubuntu 21.10: USN-5250-1 Critical: strongSwan Network Access Issue

ubuntu
Calendar Grey January 24, 2022
Dist Ubuntu Esm H88
serious vulnerability in strongSwan on Ubuntu may result in system crashes or unauthorized network access. Ensure you update immediately for enhanced security.
strongSwan could crash or allow unintended access to network services.

Summary

strongSwan could crash or allow unintended access to network services.

Software Description:

- strongswan: IPsec VPN solution

Details:

Zhuowei Zhang discovered that stringSwan incorrectly handled EAP

authentication. A remote attacker could use this issue to cause strongSwan

to crash, resulting in a denial of service, or possibly bypass client and

server authentication.

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu network access strongSwan

Update Instructions

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

Ubuntu 21.10:
  libstrongswan                   5.9.1-1ubuntu3.2
  strongswan                      5.9.1-1ubuntu3.2

Ubuntu 20.04 LTS:
  libstrongswan                   5.8.2-1ubuntu3.4
  strongswan                      5.8.2-1ubuntu3.4

Ubuntu 18.04 LTS:
  libstrongswan                   5.6.2-1ubuntu2.8
  strongswan                      5.6.2-1ubuntu2.8

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

References

https://ubuntu.com/security/notices/USN-5250-1

CVE-2021-45079

Severity
critical
Lowest
Low
Medium
High
Critical

January 24, 2022

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu network access strongSwan

Package Information

https://launchpad.net/ubuntu/+source/strongswan/5.9.1-1ubuntu3.2
https://launchpad.net/ubuntu/+source/strongswan/5.8.2-1ubuntu3.4
https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.8

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