Concrete CMS up to 8.5.18/9.3.3 Calendar Event Addition cross site scripting

Summaryinfo

A vulnerability was found in Concrete CMS up to 8.5.18/9.3.3 and classified as problematic. This issue affects some unknown processing of the component Calendar Event Addition Handler. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2024-7398. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Concrete CMS up to 8.5.18/9.3.3. Affected is an unknown code of the component Calendar Event Addition Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

Concrete CMS versions 9 through 9.3.3 and versions below 8.5.19 are vulnerable to stored XSS in the calendar event addition feature because the calendar event name was not sanitized on output. Users or groups with permission to create event calendars can embed scripts, and users or groups with permission to modify event calendars can execute scripts. The Concrete CMS Security Team gave this vulnerability a CVSS v4 score of 1.8 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N . Thank you, Yusuke Uchida for reporting.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2024-7398 since 08/02/2024. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 8.5.19 or 9.3.4 eliminates this vulnerability. The upgrade is hosted for download at documentation.concretecms.org. Applying the patch 7c8ed0d1d9db0d7f6df7fa066e0858ea618451a5 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Content Management System

Vendor

• Concrete

Name

• CMS

Version

• 8.5.0
• 8.5.1
• 8.5.2
• 8.5.3
• 8.5.4
• 8.5.5
• 8.5.6
• 8.5.7
• 8.5.8
• 8.5.9
• 8.5.10
• 8.5.11
• 8.5.12
• 8.5.13
• 8.5.14
• 8.5.15
• 8.5.16
• 8.5.17
• 8.5.18
• 9.3.0
• 9.3.1
• 9.3.2
• 9.3.3

License

• open-source

CPE 2.3info

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CPE 2.2info

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