USN-4616-2: AccountsService vulnerabilities

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Ubuntu security notices

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USN-4616-1 fixed several vulnerabilities in AccountsService. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Kevin Backhouse discovered that AccountsService incorrectly dropped privileges. A local user could possibly use this issue to cause AccountsService to crash or hang, resulting in a denial of service. (CVE-2020-16126) Matthias Gerstner discovered that AccountsService incorrectly handled certain path checks. A local attacker could possibly use this issue to read arbitrary files. (CVE-2018-14036)

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