Threat Intelligence Database

A vulnerability has been found in django-haystack up to 3.3.0. Affected is the function _to_python of the file haystack/backends/elasticsearch_backend.py of the component more_like_this Template Tag Handler. Such manipulation of the argument result_class leads to improper neutralization of directives in dynamically evaluated code. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 3.4.0 is able to address this issue. The name of the patch is eb05f193c9771a68dcc8cfac6674a0d48a52ee9d. It is suggested to upgrade the affected component.

A remote code execution (RCE) vulnerability exists in django-haystack's Elasticsearch backend due to unsafe use of eval() on attacker-controlled data during result deserialization. When a SearchField uses an index_fieldname alias different from the logical field name, the backend fails to remap the alias, causing it to call eval() on raw Elasticsearch field values. An attacker able to control indexed content and trigger a search returning that content can execute arbitrary code in the Django application process. This affects django-haystack versions prior to 3.4.0.