In dotCMS, versions mentioned, a flaw in the NormalizationFilter does not strip double slashes (//) from URLs, potentially enabling bypasses for XSS and access controls. An example affected URL is https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp https://demo.dotcms.com//html/portlet/ext/files/edit_text_inc.jsp , which should return a 404 response but didn't.
The oversight in the default invalid URL character list can be viewed at the provided GitHub link https://github.com/dotCMS/core/blob/master/dotCMS/src/main/java/com/dotcms/filters/NormalizationFilter.java#L37 .
To mitigate, users can block URLs with double slashes at firewalls or utilize dotCMS config variables.
Specifically, they can use the DOT_URI_NORMALIZATION_FORBIDDEN_STRINGS environmental variable to add // to the list of invalid strings.
Additionally, the DOT_URI_NORMALIZATION_FORBIDDEN_REGEX variable offers more detailed control, for instance, to block //html.* URLs.
Fix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+
References
Link | Resource |
---|---|
https://www.dotcms.com/security/SI-68 | Vendor Advisory |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: dotCMS
Published: 2023-10-17T22:52:05.453Z
Updated: 2023-10-23T16:58:08.007Z
Reserved: 2023-06-01T20:26:04.134Z
Link: CVE-2023-3042
JSON object: View
NVD Information
Status : Analyzed
Published: 2023-10-17T23:15:11.920
Modified: 2023-10-25T14:31:29.200
Link: CVE-2023-3042
JSON object: View
Redhat Information
No data.