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Ubuntu 16.04 LTS: USN-3902-1 Critical: PHP Denial Of Service Issues

ubuntu
Calendar Grey March 6, 2019
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in PHP.

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 ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service php Ubuntu update instructions issues module

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://ubuntu.com/security/notices/USN-3902-1

CVE-2019-9020, CVE-2019-9021, CVE-2019-9022, CVE-2019-9023,

CVE-2019-9024

Severity
critical
Lowest
Low
Medium
High
Critical

March 06, 2019

Topics%20covered

Topics Covered

security advisory denial of service php Ubuntu update instructions issues module

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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