USN-5006-1: PHP vulnerabilities

Releases

• Ubuntu 21.04
• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM

Packages

• php7.2 - HTML-embedded scripting language interpreter
• php7.4 - HTML-embedded scripting language interpreter

Details

It was discovered that PHP incorrectly handled certain PHAR files. A remote
attacker could possibly use this issue to cause PHP to crash, resulting in
a denial of service, or possibly obtain sensitive information. This issue
only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2020-7068)

It was discovered that PHP incorrectly handled parsing URLs with passwords.
A remote attacker could possibly use this issue to cause PHP to mis-parse
the URL and produce wrong data. This issue only affected Ubuntu 18.04 LTS,
Ubuntu 20.04 LTS, and Ubuntu 20.10. (CVE-2020-7071)

It was discovered that PHP incorrectly handled certain malformed XML data
when being parsed by the SOAP extension. A remote attacker could possibly
use this issue to cause PHP to crash, resulting in a denial of service.
This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu
20.10. (CVE-2021-21702)

It was discovered that PHP incorrectly handled the pdo_firebase module. A
remote attacker could possibly use this issue to cause PHP to crash,
resulting in a denial of service. (CVE-2021-21704)

It was discovered that PHP incorrectly handled the FILTER_VALIDATE_URL
check. A remote attacker could possibly use this issue to perform a server-
side request forgery attack. (CVE-2021-21705)

Update instructions

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

Ubuntu 21.04

• libapache2-mod-php7.4 - 7.4.16-1ubuntu2.1
• php7.4-cgi - 7.4.16-1ubuntu2.1
• php7.4-fpm - 7.4.16-1ubuntu2.1
• php7.4-cli - 7.4.16-1ubuntu2.1

Ubuntu 20.10

• libapache2-mod-php7.4 - 7.4.9-1ubuntu1.2
• php7.4-cgi - 7.4.9-1ubuntu1.2
• php7.4-fpm - 7.4.9-1ubuntu1.2
• php7.4-cli - 7.4.9-1ubuntu1.2

Ubuntu 20.04

• libapache2-mod-php7.4 - 7.4.3-4ubuntu2.5
• php7.4-cgi - 7.4.3-4ubuntu2.5
• php7.4-fpm - 7.4.3-4ubuntu2.5
• php7.4-cli - 7.4.3-4ubuntu2.5

Ubuntu 18.04

• php7.2-fpm - 7.2.24-0ubuntu0.18.04.8
• php7.2-cli - 7.2.24-0ubuntu0.18.04.8
• libapache2-mod-php7.2 - 7.2.24-0ubuntu0.18.04.8
• php7.2-cgi - 7.2.24-0ubuntu0.18.04.8

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

References

• CVE-2020-7071
• CVE-2021-21704
• CVE-2021-21702
• CVE-2020-7068
• CVE-2021-21705

Related notices

• USN-5006-2