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Ubuntu Security Notice USN-3902-1

Ubuntu Security Notice USN-3902-1
Posted Mar 6, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3902-1 - 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. 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. It was discovered that PHP incorrectly parsed certain DNS responses. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service, php
systems | linux, ubuntu
advisories | CVE-2019-9020, CVE-2019-9021, CVE-2019-9022, CVE-2019-9023, CVE-2019-9024
SHA-256 | c8e41445031ceeae1b65118e4b06e45ae66592a97f879619103917d898a7d5f1

Ubuntu Security Notice USN-3902-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-3902-1
March 06, 2019

php5, php7.0 vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PHP.

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

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 parsed certain DNS responses. 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. (CVE-2019-9022)

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 16.04 LTS:
libapache2-mod-php7.0 7.0.33-0ubuntu0.16.04.2
php7.0-cgi 7.0.33-0ubuntu0.16.04.2
php7.0-cli 7.0.33-0ubuntu0.16.04.2
php7.0-fpm 7.0.33-0ubuntu0.16.04.2
php7.0-mbstring 7.0.33-0ubuntu0.16.04.2
php7.0-xmlrpc 7.0.33-0ubuntu0.16.04.2

Ubuntu 14.04 LTS:
libapache2-mod-php5 5.5.9+dfsg-1ubuntu4.27
php5-cgi 5.5.9+dfsg-1ubuntu4.27
php5-cli 5.5.9+dfsg-1ubuntu4.27
php5-fpm 5.5.9+dfsg-1ubuntu4.27
php5-xmlrpc 5.5.9+dfsg-1ubuntu4.27

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

References:
https://usn.ubuntu.com/usn/usn-3902-1
CVE-2019-9020, CVE-2019-9021, CVE-2019-9022, CVE-2019-9023,
CVE-2019-9024

Package Information:
https://launchpad.net/ubuntu/+source/php7.0/7.0.33-0ubuntu0.16.04.2
https://launchpad.net/ubuntu/+source/php5/5.5.9+dfsg-1ubuntu4.27

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