WP Rocket Plugin 2.9.3 on WordPress path traversal

Summaryinfo

A vulnerability has been found in WP Rocket Plugin 2.9.3 on WordPress and classified as problematic. Impacted is an unknown function. This manipulation with the input .%00.../.%00.../ causes path traversal. This vulnerability is tracked as CVE-2017-11658. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic was found in WP Rocket Plugin 2.9.3 on WordPress (WordPress Plugin). Affected by this vulnerability is an unknown part. The manipulation with the input value .%00.../.%00.../ leads to a path traversal vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality. The summary by CVE is:

In the WP Rocket plugin 2.9.3 for WordPress, the Local File Inclusion mitigation technique is to trim traversal characters (..) -- however, this is insufficient to stop remote attacks and can be bypassed by using 0x00 bytes, as demonstrated by a .%00.../.%00.../ attack.

The bug was discovered 07/25/2017. The weakness was disclosed 07/26/2017 (Website). It is possible to read the advisory at gist.github.com. This vulnerability is known as CVE-2017-11658 since 07/26/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 1 days. During that time the estimated underground price was around $0-$5k.

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

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Productinfo

Type

• WordPress Plugin

Name

• WP Rocket Plugin

Version

• 2.9.3

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CPE 2.2info

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