[USN-5031-1] openCryptoki vulnerability

Leonidas S. Barbosa leo.barbosa at canonical.com
Wed Aug 4 17:09:56 UTC 2021

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


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

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


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.


Package Information:
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