CVE-2018-12895

WordPress through 4.9.6 allows Author users to execute arbitrary code by leveraging directory traversal in the wp-admin/post.php thumb parameter, which is passed to the PHP unlink function and can delete the wp-config.php file. This is related to missing filename validation in the wp-includes/post.php wp_delete_attachment function. The attacker must have capabilities for files and posts that are normally available only to the Author, Editor, and Administrator roles. The attack methodology is to delete wp-config.php and then launch a new installation process to increase the attacker's privileges.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://blog.ripstech.com/2018/wordpress-file-delete-to-code-execution/	Third Party Advisory
http://www.securityfocus.com/bid/104569	Third Party Advisory VDB Entry
https://wpvulndb.com/vulnerabilities/9100	Third Party Advisory
https://www.debian.org/security/2018/dsa-4250	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2018/07/msg00046.html	Mailing List Third Party Advisory
http://packetstormsecurity.com/files/164633/WordPress-4.9.6-Arbitrary-File-Deletion.html	Exploit Third Party Advisory VDB Entry

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Configurations

Configuration 1 (hide)

cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*

Information

Published : 2018-06-26 13:29

Updated : 2021-11-05 11:42

NVD link : CVE-2018-12895

Mitre link : CVE-2018-12895

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

debian

debian_linux

wordpress

wordpress

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