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Ubuntu 18.04 LTS: 3774-1 Critical: StrongSwan DoS Threat

ubuntu
Calendar Grey October 1, 2018
Dist Ubuntu Esm H88
A security flaw in StrongSwan affects multiple Ubuntu releases, potentially leading to system failures or the execution of harmful code.
strongSwan could be made to crash or run programs if it received specially crafted network traffic.

Summary

strongSwan could be made to crash or run programs if it received specially

crafted network traffic.

Software Description:

- strongswan: IPsec VPN solution

Details:

It was discovered that strongSwan incorrectly handled signature validation

in the gmp plugin. A remote attacker could use this issue to cause

strongSwan to crash, resulting in a denial of service, or possibly execute

arbitrary code.

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network threat strongswan

Update Instructions

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

Ubuntu 18.04 LTS:
  libstrongswan                   5.6.2-1ubuntu2.3
  strongswan                      5.6.2-1ubuntu2.3

Ubuntu 16.04 LTS:
  libstrongswan                   5.3.5-1ubuntu3.8
  strongswan                      5.3.5-1ubuntu3.8

Ubuntu 14.04 LTS:
  libstrongswan                   5.1.2-0ubuntu2.11
  strongswan                      5.1.2-0ubuntu2.11

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

References

https://ubuntu.com/security/notices/USN-3774-1

CVE-2018-17540

Severity
critical
Lowest
Low
Medium
High
Critical

October 01, 2018

Topics%20covered

Topics Covered

security advisory denial of service ubuntu network threat strongswan

Package Information

https://launchpad.net/ubuntu/+source/strongswan/5.6.2-1ubuntu2.3
https://launchpad.net/ubuntu/+source/strongswan/5.3.5-1ubuntu3.8
https://launchpad.net/ubuntu/+source/strongswan/5.1.2-0ubuntu2.11

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