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Ubuntu Security Notice USN-3646-2
May 16, 2018

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-3646-1 fixed a vulnerability in PHP. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

It was discovered that PHP incorrectly handled opcache access controls
when configured to use PHP-FPM. A local user could possibly use this
issue to obtain sensitive information from another user’s PHP
applications. (CVE-2018-10545)

It was discovered that the PHP PHAR error pages incorrectly filtered
certain data. A remote attacker could possibly use this issue to
perform a reflected XSS attack. (CVE-2018-10547)

It was discovered that PHP incorrectly handled LDAP. A malicious
remote LDAP server could possibly use this issue to cause PHP to
crash, resulting in a denial of service. (CVE-2018-10548)

Update instructions:

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

Ubuntu 12.04 ESM:
libapache2-mod-php5             5.3.10-1ubuntu3.31
php5-cgi                        5.3.10-1ubuntu3.31
php5-cli                        5.3.10-1ubuntu3.31
php5-fpm                        5.3.10-1ubuntu3.31

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

References:
https://usn.ubuntu.com/usn/usn-3646-2
https://usn.ubuntu.com/usn/usn-3646-1
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