CVE-2018-12895
Published: 26 June 2018
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.
Priority
Status
Package | Release | Status |
---|---|---|
wordpress Launchpad, Ubuntu, Debian |
artful |
Ignored
(end of life)
|
bionic |
Needed
|
|
cosmic |
Ignored
(end of life)
|
|
disco |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
eoan |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
focal |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
trusty |
Does not exist
(trusty was needs-triage)
|
|
upstream |
Released
(4.9.7+dfsg1-1)
|
|
impish |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
groovy |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
xenial |
Needed
|
|
jammy |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
kinetic |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
lunar |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
hirsute |
Not vulnerable
(4.9.7+dfsg1-1)
|
|
mantic |
Not vulnerable
(4.9.7+dfsg1-1)
|
Severity score breakdown
Parameter | Value |
---|---|
Base score | 8.8 |
Attack vector | Network |
Attack complexity | Low |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | High |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |