Summaryinfo

A vulnerability described as critical has been identified in tcpdf up to 6.1.x. Affected is an unknown function of the component File Upload. Executing a manipulation can lead to access control. This vulnerability appears as CVE-2017-6100. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in tcpdf up to 6.1.x. This vulnerability affects an unknown code block of the component File Upload. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

tcpdf before 6.2.0 uploads files from the server generating PDF-files to an external FTP.

The bug was discovered 02/19/2017. The weakness was presented 02/23/2017 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability was named CVE-2017-6100 since 02/19/2017. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 4 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 6.2.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• tcpdf

Version

• 6.0
• 6.1

CPE 2.3info

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CPE 2.2info

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