UBUNTU-CVE-2018-12895
- Source
- https://ubuntu.com/security/CVE-2018-12895
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-12895.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2018-12895
- Upstream
- Published
- 2018-06-26T20:29:00Z
- Modified
- 2025-10-24T04:47:05Z
- Severity
-
- 8.8 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Ubuntu - medium
- Summary
- [none]
- Details
-
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.
- References
Affected packages
Ubuntu:16.04:LTS / wordpress
Package
- Name
- wordpress
- Purl
- pkg:deb/ubuntu/wordpress@4.4.2+dfsg-1ubuntu1?arch=source&distro=xenial
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
4.*
4.3+dfsg-1
4.3.1+dfsg-1
4.4+dfsg-1
4.4.1+dfsg-1
4.4.2+dfsg-1
4.4.2+dfsg-1ubuntu1
Ecosystem specific
{
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentyfifteen",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentyfourteen",
"binary_version": "4.4.2+dfsg-1ubuntu1"
},
{
"binary_name": "wordpress-theme-twentysixteen",
"binary_version": "4.4.2+dfsg-1ubuntu1"
}
]
}
Ubuntu:18.04:LTS / wordpress
Package
- Name
- wordpress
- Purl
- pkg:deb/ubuntu/wordpress@4.9.5+dfsg1-1?arch=source&distro=bionic
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0 Unknown introduced version / All previous versions are affected
Affected versions
4.*
4.8.2+dfsg-2
4.8.3+dfsg-1
4.9.1+dfsg-1
4.9.2+dfsg-1
4.9.4+dfsg-1
4.9.5+dfsg1-1
Ecosystem specific
{
"binaries": [
{
"binary_name": "wordpress",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-l10n",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentyfifteen",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentyseventeen",
"binary_version": "4.9.5+dfsg1-1"
},
{
"binary_name": "wordpress-theme-twentysixteen",
"binary_version": "4.9.5+dfsg1-1"
}
]
}