WordPress Subscribe To Comments 2.1.2 LFI / Code Execution

Credit: Tom Adams
Risk: High
Local: No
Remote: Yes

Details ================ Software: Subscribe to Comments Version: 2.1.2 Homepage: http://wordpress.org/plugins/subscribe-to-comments/ Advisory report: https://security.dxw.com/advisories/admin-only-local-file-inclusion-and-arbitrary-code-execution-in-subscribe-to-comments-2-1-2/ CVE: Awaiting assignment CVSS: 8 (High; AV:N/AC:L/Au:S/C:C/I:P/A:P) Description ================ Admin-only local file inclusion and arbitrary code execution in Subscribe to Comments 2.1.2 Vulnerability ================ Administrators can perform Local File include attacks, which is a privilege escalation on systems where the administrator doesn?t have control over the server. If administrators can upload PHP files (or any file which can contain ?<?php ??), they can also perform arbitrary code execution by the same method. Proof of concept ================ http://localhost/wp-admin/options-general.php?page=stc-options Set ?Path to header? to ?/etc/passwd? Check ?Use custom style for Subscription Manager? ?Update Options? https://localhost/?wp-subscription-manager=1 Mitigations ================ Upgrade to version 2.3 or later Disclosure policy ================ dxw believes in responsible disclosure. Your attention is drawn to our disclosure policy: https://security.dxw.com/disclosure/ Please contact us on security@dxw.com to acknowledge this report if you received it via a third party (for example, plugins@wordpress.org) as they generally cannot communicate with us on your behalf. This vulnerability will be published if we do not receive a response to this report with 14 days. Timeline ================ 2013-08-07: Discovered 2015-07-13: Reported to vendor by email 2015-07-13: Requested CVE 2015-07-14: Vendor responded confirming fixed in version 2.3 2015-07-14: Published Discovered by dxw: ================ Tom Adams Please visit security.dxw.com for more information.

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