CVE-2023-3042
See a problem?- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-3042
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-3042.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-3042
- Published
- 2023-10-17T23:15:11Z
- Modified
- 2024-09-03T04:32:58.952315Z
- Severity
-
- 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
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/edittextinc.jsp https://demo.dotcms.com//html/portlet/ext/files/edittextinc.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 DOTURINORMALIZATIONFORBIDDENSTRINGS environmental variable to add // to the list of invalid strings.
Additionally, the DOTURINORMALIZATIONFORBIDDENREGEX variable offers more detailed control, for instance, to block //html.* URLs.
Fix Version:23.06+, LTS 22.03.7+, LTS 23.01.4+
- References