Ubuntu alert USN-5300-1 (php7.0)

From:
             
 
Rodrigo Figueiredo Zaiden <rodrigo.zaiden@canonical.com>
To:
             
 
ubuntu-security-announce@lists.ubuntu.com
Subject:
             
 
[USN-5300-1] PHP vulnerabilities
Date:
             
 
Tue, 22 Feb 2022 18:07:31 -0300
Message-ID:
             
 
<40248997-f0fb-74a8-0323-56f11dc4e601@canonical.com>
==========================================================================
Ubuntu Security Notice USN-5300-1
February 22, 2022

php7.0 vulnerabilities
==========================================================================

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

- Ubuntu 16.04 ESM

Summary:

Several security issues were fixed in PHP.

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

Details:

It was discovered that PHP incorrectly handled certain scripts.
An attacker could possibly use this issue to cause a denial of service.
(CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9120)

It was discovered that PHP incorrectly handled certain inputs.
An attacker could possibly use this issue to cause a denial of service,
or possibly obtain sensitive information. (CVE-2017-9119)

It was discovered that PHP incorrectly handled certain scripts with XML
parsing functions.
An attacker could possibly use this issue to obtain sensitive information.
(CVE-2021-21707)

Update instructions:

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

Ubuntu 16.04 ESM:
   php7.0-cgi                      7.0.33-0ubuntu0.16.04.16+esm3
   php7.0-cli                      7.0.33-0ubuntu0.16.04.16+esm3
   php7.0-fpm                      7.0.33-0ubuntu0.16.04.16+esm3

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

References:
   https://ubuntu.com/security/notices/USN-5300-1
   CVE-2015-9253, CVE-2017-8923, CVE-2017-9118, CVE-2017-9119,
   CVE-2017-9120, CVE-2021-21707
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