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+
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History

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cve-icon MITRE

Status: PUBLISHED

Assigner: dotCMS

Published: 2023-10-17T22:52:05.453Z

Updated: 2024-09-13T15:25:03.957Z

Reserved: 2023-06-01T20:26:04.134Z

Link: CVE-2023-3042

cve-icon Vulnrichment

Updated: 2024-08-02T06:41:04.130Z

cve-icon NVD

Status : Analyzed

Published: 2023-10-17T23:15:11.920

Modified: 2023-10-25T14:31:29.200

Link: CVE-2023-3042

cve-icon Redhat

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