Several security issues were fixed in PHP.
USN-3902-1 fixed a vulnerability in PHP. This update provides the corresponding update for Ubuntu 12.04 ESM.
12 March 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in PHP.
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.