=========================================================================Ubuntu Security Notice USN-5031-1
August 04, 2021

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

- Ubuntu 21.04

Summary:

openCryptoki could be made to allow invalid curve attacks if it received a specially
crafted key.

Software Description:
- opencryptoki: PKCS#11 implementation (daemon)

Details:

It was discovered that openCryptoki incorrectly handled certain EC keys.
An attacker could possibly use this issue to cause a invalid curve attack.

Update instructions:

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

Ubuntu 21.04:
  libopencryptoki0                3.15.1+dfsg-0ubuntu1.2
  opencryptoki                    3.15.1+dfsg-0ubuntu1.2

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

References:
  https://ubuntu.com/security/notices/USN-5031-1
  https://bugs.launchpad.net/ubuntu/+source/opencryptoki/+bug/1928780

Package Information:
  https://launchpad.net/ubuntu/+source/opencryptoki/3.15.1+dfsg-0ubuntu1.2