Ubuntu Security Notice 3857-1 - Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled certain archive paths. A remote attacker could possibly use this issue to execute arbitrary code.
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Ubuntu Security Notice USN-3857-1
January 14, 2019
php-pear vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.10
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary:
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XXX LOCAL TEMPLATES XXX
PEAR could be made to run programs if it processed a specially crafted
file.
Software Description:
- php-pear: PHP Extension and Application Repository
Details:
Fariskhi Vidyan discovered that PEAR Archive_Tar incorrectly handled
certain archive paths. 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 18.10:
php-pear 1:1.10.5+submodules+notgz-1ubuntu1.18.10.1
Ubuntu 18.04 LTS:
php-pear 1:1.10.5+submodules+notgz-1ubuntu1.18.04.1
Ubuntu 16.04 LTS:
php-pear 1:1.10.1+submodules+notgz-6ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/usn/usn-3857-1
CVE-2018-1000888
Package Information:
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.5+submodules+notgz-1ubuntu1.18.10.1
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.5+submodules+notgz-1ubuntu1.18.04.1
https://launchpad.net/ubuntu/+source/php-pear/1:1.10.1+submodules+notgz-6ubuntu0.1