Contao up to 4.13.39/5.3.3 Broken Link information disclosure

Summaryinfo

A vulnerability was found in Contao up to 4.13.39/5.3.3 and classified as problematic. Affected by this vulnerability is an unknown functionality of the component Broken Link Handler. Such manipulation leads to information disclosure. This vulnerability is documented as CVE-2024-28235. 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, has been found in Contao up to 4.13.39/5.3.3. Affected by this issue is an unknown code of the component Broken Link Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. CVE summarizes:

Contao is an open source content management system. Starting in version 4.9.0 and prior to versions 4.13.40 and 5.3.4, when checking for broken links on protected pages, Contao sends the cookie header to external urls as well, the passed options for the http client are used for all requests. Contao versions 4.13.40 and 5.3.4 have a patch for this issue. As a workaround, disable crawling protected pages.

The advisory is available at github.com. This vulnerability is handled as CVE-2024-28235 since 03/07/2024. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

Upgrading to version 4.13.40 or 5.3.4 eliminates this vulnerability.

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Productinfo

Name

• Contao

Version

• 4.13.0
• 4.13.1
• 4.13.2
• 4.13.3
• 4.13.4
• 4.13.5
• 4.13.6
• 4.13.7
• 4.13.8
• 4.13.9
• 4.13.10
• 4.13.11
• 4.13.12
• 4.13.13
• 4.13.14
• 4.13.15
• 4.13.16
• 4.13.17
• 4.13.18
• 4.13.19
• 4.13.20
• 4.13.21
• 4.13.22
• 4.13.23
• 4.13.24
• 4.13.25
• 4.13.26
• 4.13.27
• 4.13.28
• 4.13.29
• 4.13.30
• 4.13.31
• 4.13.32
• 4.13.33
• 4.13.34
• 4.13.35
• 4.13.36
• 4.13.37
• 4.13.38
• 4.13.39
• 5.3.0
• 5.3.1
• 5.3.2
• 5.3.3

License

• open-source

Website

• Product: https://github.com/contao/contao/

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