YUNUCMS 1.1.5 Local.class.php path traversal

Summaryinfo

A vulnerability was found in YUNUCMS 1.1.5. It has been rated as critical. This affects an unknown function of the file statics/ueditor/php/vendor/Local.class.php. Performing a manipulation results in path traversal. This vulnerability is identified as CVE-2018-19181. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in YUNUCMS 1.1.5. This affects an unknown function of the file statics/ueditor/php/vendor/Local.class.php. 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 integrity, and availability. The summary by CVE is:

statics/ueditor/php/vendor/Local.class.php in YUNUCMS 1.1.5 allows arbitrary file deletion via the statics/ueditor/php/controller.php?action=remove key parameter, as demonstrated by using directory traversal to delete the install.lock file.

The bug was discovered 11/07/2018. The weakness was released 11/11/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-19181 since 11/11/2018. 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 of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

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. By approaching the search of inurl:statics/ueditor/php/vendor/Local.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.

Entry connected to this vulnerability is available at VDB-126650. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

• YUNUCMS

Version

• 1.1.5

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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