A PEAR security update has been released for Ubuntu Linux 18.04 LTS, 20.04 LTS, and 21.04.
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Ubuntu Security Notice USN-5027-1
July 29, 2021
php-pear vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 21.04
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
Summary:
PEAR could be made to overwrite files as the administrator.
Software Description:
- php-pear: PHP Extension and Application Repository
Details:
It was discovered that PEAR incorrectly handled symbolic links in archives.
A remote attacker could possibly use this issue to execute arbitrary code.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 21.04:
php-pear 1:1.10.9+submodules+notgz-1.1ubuntu1.1
Ubuntu 20.04 LTS:
php-pear 1:1.10.9+submodules+notgz-1ubuntu0.20.04.3
Ubuntu 18.04 LTS:
php-pear 1:1.10.5+submodules+notgz-1ubuntu1.18.04.4
In general, a standard system update will make all the necessary changes.
References:
https://ubuntu.com/security/notices/USN-5027-1
CVE-2021-32610
Package Information:
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.9+submodules+notgz-1.1ubuntu1.1
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.9+submodules+notgz-1ubuntu0.20.04.3
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.5+submodules+notgz-1ubuntu1.18.04.4
