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Ubuntu Security Notice USN-4330-2
May 06, 2020

php7.4 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 20.04 LTS

Summary:

Several security issues were fixed in PHP.

Software Description:
– php7.4: server-side, HTML-embedded scripting language (metapackage)

Details:

USN-4330-1 fixed vulnerabilities in PHP. This update provides the corresponding
update for Ubuntu 20.04 LTS.

Original advisory details:

It was discovered that PHP incorrectly handled certain EXIF files.
An attacker could possibly use this issue to access sensitive information
or cause a crash. (CVE-2020-7064)

It was discovered that PHP incorrectly handled certain UTF strings.
An attacker could possibly use this issue to cause a crash or execute
arbitrary code. (CVE-2020-7065)

It was discovered that PHP incorrectly handled certain URLs.
An attacker could possibly use this issue to expose sensitive information.
(CVE-2020-7066)

Update instructions:

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

Ubuntu 20.04 LTS:
libapache2-mod-php7.4 7.4.3-4ubuntu1.1
php7.4-cgi 7.4.3-4ubuntu1.1
php7.4-cli 7.4.3-4ubuntu1.1
php7.4-fpm 7.4.3-4ubuntu1.1
php7.4-mbstring 7.4.3-4ubuntu1.1

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

References:
https://usn.ubuntu.com/4330-2
https://usn.ubuntu.com/4330-1
CVE-2020-7064, CVE-2020-7065, CVE-2020-7066

Package Information:
https://launchpad.net/ubuntu/+source/php7.4/7.4.3-4ubuntu1.1
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