Contao up to 3.2.18/3.4.3 Backend path traversal

Summaryinfo

A vulnerability classified as problematic has been found in Contao up to 3.2.18/3.4.3. Affected is an unknown function of the component Backend. Performing a manipulation results in path traversal. This vulnerability was named CVE-2015-0269. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Contao up to 3.2.18/3.4.3. This affects some unknown processing of the component Backend. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. The summary by CVE is:

Directory traversal vulnerability in Contao before 3.2.19, and 3.4.x before 3.4.4 allows remote authenticated "back end" users to view files outside their file mounts or the document root via unspecified vectors.

The bug was discovered 03/26/2015. The weakness was presented 05/26/2017 (Website). The advisory is shared at contao.org. This vulnerability is uniquely identified as CVE-2015-0269 since 11/18/2014. It is possible to initiate the attack remotely. Required for exploitation is a authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1006 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 792 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.2.19 or 3.4.4 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• Contao

Version

• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3
• 3.2.4
• 3.2.5
• 3.2.6
• 3.2.7
• 3.2.8
• 3.2.9
• 3.2.10
• 3.2.11
• 3.2.12
• 3.2.13
• 3.2.14
• 3.2.15
• 3.2.16
• 3.2.17
• 3.2.18
• 3.4.0
• 3.4.1
• 3.4.2
• 3.4.3

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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