Ubuntu has issued an update for php. This fixes some vulnerabilities, which can be exploited by malicious users to disclose potentially sensitive information, bypass certain security restrictions, gain escalated privileges, cause a DoS (Denial of Service), compromise a vulnerable system, and by malicious people to disclose potentially sensitive information, bypass certain security restrictions, cause a DoS (Denial of Service), and potentially compromise a vulnerable system.

For more information:
SA24089
SA24505
SA24542
SA24824

Solution
Apply updated packages.
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Other references
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