CVE-2020-28949 - PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability

Vulnerability Name

PEAR Archive_Tar Deserialization of Untrusted Data Vulnerability

Description

PEAR Archive_Tar allows an unserialization attack because phar: is blocked but PHAR: is not blocked. PEAR stands for PHP Extension and Application Repository and it is an open-source framework and distribution system for reusable PHP components with known usage in third-party products such as Drupal Core and Red Hat Linux.

Known To Be Used in Ransomware Campaigns?

Unknown

Action

Apply updates per vendor instructions.

Additional Notes

https://pear.php.net/bugs/bug.php?id=27002, https://www.drupal.org/sa-core-2020-013, https://access.redhat.com/security/cve/cve-2020-28949

https://nvd.nist.gov/vuln/detail/CVE-2020-28949