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Ubuntu Security Notice USN-3902-2
March 12, 2019

php5 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in PHP.

Software Description:
- php5: HTML-embedded scripting language interpreter

Details:

USN-3902-1 fixed a vulnerability in PHP. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that the PHP XML-RPC module incorrectly handled
 decoding XML data. A remote attacker could possibly use this issue to
 cause PHP to crash, resulting in a denial of service. (CVE-2019-9020,
 CVE-2019-9024)

 It was discovered that the PHP PHAR module incorrectly handled certain
 filenames. A remote attacker could possibly use this issue to cause
 PHP to crash, resulting in a denial of service. (CVE-2019-9021)

 It was discovered that PHP incorrectly handled mbstring regular
 expressions. A remote attacker could possibly use this issue to cause
 PHP to crash, resulting in a denial of service. (CVE-2019-9023)

Update instructions:

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

Ubuntu 12.04 ESM:
  libapache2-mod-php5             5.3.10-1ubuntu3.33
  php5-cgi                        5.3.10-1ubuntu3.33
  php5-cli                        5.3.10-1ubuntu3.33
  php5-fpm                        5.3.10-1ubuntu3.33
  php5-xmlrpc                     5.3.10-1ubuntu3.33

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

References:
  https://usn.ubuntu.com/usn/usn-3902-2
  https://usn.ubuntu.com/usn/usn-3902-1
  CVE-2019-9020, CVE-2019-9021, CVE-2019-9023, CVE-2019-9024