Some vulnerabilities have been reported in the Aggregation module for Drupal, which can be exploited by malicious people to bypass certain security restrictions, conduct cross-site scripting attacks, SQL injection attacks, and potentially compromise a vulnerable system.
1) Input passed to various unspecified parameters is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
2) Input passed to various unspecified parameters is not properly sanitised before being used in SQL queries. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
3) It is possible to upload arbitrary files via malicious feeds. Depending upon the configuration of the server, this may also allow execution of arbitrary code.
4) Errors within the implementation of access controls can be exploited to bypass certain security restrictions.
Successful exploitation of this vulnerability requires that node access modules (taxonomy access control, acl) are used.
The vulnerabilities are reported in versions prior to 5.x-4.4.
Solution: Update to version 5.x-4.4.
Provided and/or discovered by: A cross site scripting issue has been reported by fonan, the other issues have been reported by Adam Light and Heine Deelstra of the Drupal security team.
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