postbooks vulnerabilities (Ubuntu)

2 vulnerabilities.

• postbooks Ubuntu Hunspell 1.7.0 has an invalid read operation in SuggestMgr::leftcommonsubstring in suggestmgr.cxx. CVE-2019-16707 Fix available 6.5 MediumSeptember 23, 2019
• postbooks Ubuntu guiclient/guiclient.cpp in xTuple PostBooks 4.7.0 does not validate strings before launching the... CVE-2017-17525 8.8 HighDecember 14, 2017