This bug was fixed in the package edk2 - 0~20180803.dd4cae4d-1ubuntu1.1

---------------
edk2 (0~20180803.dd4cae4d-1ubuntu1.1) cosmic; urgency=medium

  * Security fixes (LP: #1820764):
    - Fix buffer overflow in BlockIo service (CVE-2018-12180)
    - DNS: Check received packet size before using (CVE-2018-12178)
    - Fix stack overflow with corrupted BMP (CVE-2018-12181)

 -- dann frazier <[email protected]>  Mon, 08 Jul 2019 09:59:55 -0600

** Changed in: edk2 (Ubuntu Cosmic)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1820764

Title:
  CVE-2018-12178 CVE-2018-12180 CVE-2018-12181

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