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[email protected]CVE-2023-3042

HistoryOct 17, 2023 - 11:15 p.m.

CVE-2023-3042

2023-10-1723:15:11

CWE-20

CWE-79

[email protected]

web.nvd.nist.gov

dotcms

normalizationfilter

flaw

xss

access control

bypass

security

cve-2023-3042

6.1 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

0.0005 Low

EPSS

Percentile

16.7%

JSON

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+

Affected configurations

NVD

Node

dotcmsdotcmsMatch5.3.8

dotcmsdotcmsMatch21.06

dotcmsdotcmsMatch22.03

dotcmsdotcmsMatch23.01

CPENameOperatorVersion
dotcms:dotcmsdotcmseq5.3.8
dotcms:dotcmsdotcmseq21.06
dotcms:dotcmsdotcmseq22.03
dotcms:dotcmsdotcmseq23.01

CPE	Name	Operator	Version
dotcms:dotcms	dotcms	eq	5.3.8
dotcms:dotcms	dotcms	eq	21.06
dotcms:dotcms	dotcms	eq	22.03
dotcms:dotcms	dotcms	eq	23.01

CNA Affected

[
  {
    "defaultStatus": "unaffected",
    "product": "dotCMS core",
    "vendor": "dotCMS",
    "versions": [
      {
        "status": "affected",
        "version": "5.3.8"
      },
      {
        "status": "affected",
        "version": "21.06"
      },
      {
        "status": "affected",
        "version": "22.03"
      },
      {
        "status": "affected",
        "version": "23.01"
      }
    ]
  }
]