It was discovered that Leptonica incorrectly handled path names. An
attacker could possibly use this issue to obtain sensitive information.
This issue only affected Ubuntu 16.04 ESM. (CVE-2017-18196)
It was discovered that Leptonica incorrectly handled certain input
arguments. An attacker could possibly use this issue to execute arbitrary
commands. (CVE-2018-3836)
It was discovered that Leptonica incorrectly handled input arguments. An
attacker could possibly use this issue to cause a denial of service or
other unspecified impact. (CVE-2018-7186)