Debian LTS: Security Advisory for wordpress (DLA-2371-1)

Published: 2020-09-12 03:00:13
CVE Author: NIST National Vulnerability Database

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

Summary:
The remote host is missing an update for the 'wordpress' Linux Distribution Package(s) announced via the DLA-2371-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Multiple vulnerabilities were discovered in Wordpress, a popular content management framework. CVE-2019-17670 WordPress has a Server Side Request Forgery (SSRF) vulnerability because Windows paths are mishandled during certain validation of relative URLs. CVE-2020-4047 Authenticated users with upload permissions (like authors) are able to inject JavaScript into some media file attachment pages in a certain way. This can lead to script execution in the context of a higher privileged user when the file is viewed by them. CVE-2020-4048 Due to an issue in wp_validate_redirect() and URL sanitization, an arbitrary external link can be crafted leading to unintended/open redirect when clicked. CVE-2020-4049 When uploading themes, the name of the theme folder can be crafted in a way that could lead to JavaScript execution in /wp-admin on the themes page. CVE-2020-4050 Misuse of the `set-screen-option` filter's return value allows arbitrary user meta fields to be saved. It does require an admin to install a plugin that would misuse the filter. Once installed, it can be leveraged by low privileged users. Additionally, this upload ensures latest comments can only be viewed from public posts, and fixes back the user activation procedure.

Affected Versions:
'wordpress' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 9 stretch, these problems have been fixed in version 4.7.18+dfsg-1+deb9u1. We recommend that you upgrade your wordpress Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2019-17670
https://nvd.nist.gov/vuln/detail/CVE-2020-4047
https://nvd.nist.gov/vuln/detail/CVE-2020-4048
https://nvd.nist.gov/vuln/detail/CVE-2020-4049
https://nvd.nist.gov/vuln/detail/CVE-2020-4050

References:

https://lists.debian.org/debian-lts-announce/2020/09/msg00011.html
https://security-tracker.debian.org/tracker/DLA-2371-1
https://bugs.debian.org/942459
https://bugs.debian.org/962685

Severity
High
CVSS Score
7.5
Published
2020-09-12
Modified
2020-09-14
Category
Debian Local Security Checks

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