CVE-2019-6338

In Drupal Core versions 7.x prior to 7.62, 8.6.x prior to 8.6.6 and 8.5.x prior to 8.5.9; Drupal core uses the third-party PEAR Archive_Tar library. This library has released a security update which impacts some Drupal configurations. Refer to CVE-2018-1000888 for details

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Potential Mitigations

• Make fields transient to protect them from deserialization.
• An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/586.html

References

• http://www.securityfocus.com/bid/106706
• https://lists.debian.org/debian-lts-announce/2019/02/msg00032.html
• https://www.debian.org/security/2019/dsa-4370
• https://www.drupal.org/sa-core-2019-001
• http://www.securityfocus.com/bid/106706
• https://lists.debian.org/debian-lts-announce/2019/02/msg00032.html
• https://www.debian.org/security/2019/dsa-4370
• https://www.drupal.org/sa-core-2019-001