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Ubuntu Security Notice USN-3646-1

Ubuntu Security Notice USN-3646-1
Posted May 14, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3646-1 - 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. It was discovered that the PHP iconv stream filter incorrect handled certain invalid multibyte sequences. A remote attacker could possibly use this issue to cause PHP to hang, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, remote, denial of service, local, php
systems | linux, ubuntu
advisories | CVE-2018-10545, CVE-2018-10546, CVE-2018-10547, CVE-2018-10548, CVE-2018-10549
MD5 | 671fb2061c1fff15655f741886b1e10a

Ubuntu Security Notice USN-3646-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3646-1
May 14, 2018

php5, php7.0, php7.1, php7.2 vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS
- Ubuntu 17.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
- php7.2: HTML-embedded scripting language interpreter
- php7.1: HTML-embedded scripting language interpreter
- php7.0: HTML-embedded scripting language interpreter
- php5: HTML-embedded scripting language interpreter

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 iconv stream filter incorrect handled
certain invalid multibyte sequences. A remote attacker could possibly use
this issue to cause PHP to hang, resulting in a denial of service.
(CVE-2018-10546)

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)

It was discovered that PHP incorrectly handled certain exif tags in JPEG
images. A remote attacker could possibly use this issue to cause PHP to
crash, resulting in a denial of service. This issue only affected Ubuntu
16.04 LTS, Ubuntu 17.10, and Ubuntu 18.04 LTS. (CVE-2018-10549)

Update instructions:

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

Ubuntu 18.04 LTS:
libapache2-mod-php7.2 7.2.5-0ubuntu0.18.04.1
php7.2-cgi 7.2.5-0ubuntu0.18.04.1
php7.2-cli 7.2.5-0ubuntu0.18.04.1
php7.2-fpm 7.2.5-0ubuntu0.18.04.1

Ubuntu 17.10:
libapache2-mod-php7.1 7.1.17-0ubuntu0.17.10.1
php7.1-cgi 7.1.17-0ubuntu0.17.10.1
php7.1-cli 7.1.17-0ubuntu0.17.10.1
php7.1-fpm 7.1.17-0ubuntu0.17.10.1

Ubuntu 16.04 LTS:
libapache2-mod-php7.0 7.0.30-0ubuntu0.16.04.1
php7.0-cgi 7.0.30-0ubuntu0.16.04.1
php7.0-cli 7.0.30-0ubuntu0.16.04.1
php7.0-fpm 7.0.30-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.25
php5-cgi 5.5.9+dfsg-1ubuntu4.25
php5-cli 5.5.9+dfsg-1ubuntu4.25
php5-fpm 5.5.9+dfsg-1ubuntu4.25

In Ubuntu 16.04 LTS, Ubuntu 17.10, and Ubuntu 18.04 LTS, this update uses a
new upstream release, which includes additional bug fixes.

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

References:
https://usn.ubuntu.com/usn/usn-3646-1
CVE-2018-10545, CVE-2018-10546, CVE-2018-10547, CVE-2018-10548,
CVE-2018-10549

Package Information:
https://launchpad.net/ubuntu/+source/php7.2/7.2.5-0ubuntu0.18.04.1
https://launchpad.net/ubuntu/+source/php7.1/7.1.17-0ubuntu0.17.10.1
https://launchpad.net/ubuntu/+source/php7.0/7.0.30-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.25

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