CVE-2020-28037
Critical
Description
is_blog_installed in wp-includes/functions.php in WordPress before 5.5.2 improperly determines whether WordPress is already installed, which might allow an attacker to perform a new installation, leading to remote code execution (as well as a denial of service for the old installation).
SeverityCritical
CVSS9.8
Exploit probability95. percentile8.1%
Product
Wordpress
PublishedNov 2, 2020
First seenNov 2, 2020
Weakness typeCWE-754CWE-754
How to fix
Update
- wordpress wordpress5.5.2 or later
Vendor advisories
- wordpress.org/news/2020/10/wordpress-5-5-2-security-and-maintenance-release/
- debian.org/security/2020/dsa-4784
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VAVVYJKA2I6CRQUINECDPBGWMQDEG244/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUXVUAKL2HL4QYJEPHBNVQQWRMFMII2Y/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CHHVNK2WYAM3ZTCXTFSEIT56IKLVJHU3/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| wordpress wordpress | v < 5.5.2 | 5.5.2 |
| fedoraproject fedora | 31, 32, 33 | — |
| debian debian_linux | 10.0 | — |
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