phpCMS 9.6.0 JSON Data attachment.class.php IMG Element code injection

Summaryinfo

A vulnerability marked as critical has been reported in phpCMS 9.6.0. This affects an unknown function of the file libs\classes\attachment.class.php of the component JSON Data Handler. Performing a manipulation with the input txt?php#jpg as part of IMG Element results in code injection. This vulnerability is known as CVE-2018-14399. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in phpCMS 9.6.0. It has been classified as critical. This affects an unknown code of the file libs\classes\attachment.class.php of the component JSON Data Handler. The manipulation with the input value txt?php#jpg leads to a code injection vulnerability. CWE is classifying the issue as CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

libs\classes\attachment.class.php in PHPCMS 9.6.0 allows remote attackers to upload and execute arbitrary PHP code via a .txt?.php#.jpg URI in the SRC attribute of an IMG element within info[content] JSON data to the index.php?m=member&c=index&a=register URI.

The bug was discovered 07/18/2018. The weakness was published 07/19/2018 (Website). The advisory is shared at an-sheng.cc. This vulnerability is uniquely identified as CVE-2018-14399 since 07/18/2018. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:libs\classes\attachment.class.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• phpCMS

Version

• 9.6.0

CPE 2.3info

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• 🔍

CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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