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Ubuntu Security Notice USN-4055-1
July 15, 2019

flightcrew vulnerabilities
==========================================================================

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

- Ubuntu 19.04
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in FlightCrew.

Software Description:
- flightcrew: C++ epub validator and plugin for Sigil

Details:

Mike Salvatore discovered that FlightCrew improperly handled certain
malformed EPUB files. An attacker could potentially use this vulnerability
to cause a denial of service. (CVE-2019-13032)

Mike Salvatore discovered that FlightCrew mishandled certain malformed EPUB
files. An attacker could use this vulnerability to write arbitrary files to
the filesystem. (CVE-2019-13241)

Mike Salvatore discovered that the version of Zipios included in FlightCrew
mishandled certain malformed ZIP files. An attacker could use this vulnerability
to cause a denial of service or consume system resources. (CVE-2019-13453)

Update instructions:

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

Ubuntu 19.04:
  flightcrew                      0.7.2+dfsg-13ubuntu0.19.04.1
  libflightcrew0v5                0.7.2+dfsg-13ubuntu0.19.04.1

Ubuntu 18.10:
  flightcrew                      0.7.2+dfsg-12ubuntu0.1
  libflightcrew0v5                0.7.2+dfsg-12ubuntu0.1

Ubuntu 18.04 LTS:
  flightcrew                      0.7.2+dfsg-10ubuntu0.1
  libflightcrew0v5                0.7.2+dfsg-10ubuntu0.1

Ubuntu 16.04 LTS:
  flightcrew                      0.7.2+dfsg-6ubuntu0.1
  libflightcrew0v5                0.7.2+dfsg-6ubuntu0.1

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

References:
  https://usn.ubuntu.com/4055-1
  CVE-2019-13032, CVE-2019-13241, CVE-2019-13453

Package Information:
  https://launchpad.net/ubuntu/+source/flightcrew/0.7.2+dfsg-13ubuntu0.19.04.1
  https://launchpad.net/ubuntu/+source/flightcrew/0.7.2+dfsg-12ubuntu0.1
  https://launchpad.net/ubuntu/+source/flightcrew/0.7.2+dfsg-10ubuntu0.1
  https://launchpad.net/ubuntu/+source/flightcrew/0.7.2+dfsg-6ubuntu0.1