CVE-2023-5504: backwpup Path Traversal — Fix

Description

The BackWPup plugin for WordPress is vulnerable to Directory Traversal in versions up to, and including, 4.0.1 via the Log File Folder. This allows authenticated attackers to store backups in arbitrary folders on the server provided they can be written to by the server. Additionally, default settings will place an index.php and a .htaccess file into the chosen directory (unless already present) when the first backup job is run that are intended to prevent directory listing and file access. This means that an attacker could set the backup directory to the root of another site in a shared environment and thus disable that site.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:H

Weakness Type (CWE)

CWE-22 Path Traversal

Affected Products

Vendor	Product	Versions
inpsyde	backwpup	< 4.0.1

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3000176%40backwpup%2Ftrunk&old=2980789%40backwpup%2Ftrunk&sfp_email=&sfph_mail= https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3000176%40backwpup%2Ftrunk&old=2980789%40backwpup%2Ftrunk&sfp_email=&sfph_mail=

Other References

https://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/class-page-settings.php?rev=2818974#L457 https://www.wordfence.com/threat-intel/vulnerabilities/id/e830fe1e-1171-46da-8ee7-0a6654153f18?source=cve https://plugins.trac.wordpress.org/browser/backwpup/trunk/inc/class-page-settings.php?rev=2818974#L457 https://www.wordfence.com/threat-intel/vulnerabilities/id/e830fe1e-1171-46da-8ee7-0a6654153f18?source=cve

Frequently Asked Questions

What is CVE-2023-5504? +

The BackWPup plugin for WordPress is vulnerable to Directory Traversal in versions up to, and including, 4.0.1 via the Log File Folder. This allows authenticated attackers to store backups in arbitrary folders on the server provided they can be written to by the server. Additionally, default settings will place an index.php and a .htaccess file into the chosen directory (unless already present) when the first backup job is run that are intended to prevent directory listing and file access. This means that an attacker could set the backup directory to the root of another site in a shared environment and thus disable that site. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2023-5504? +

CVE-2023-5504 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2023-5504? +

CVE-2023-5504 affects products from inpsyde, specifically: backwpup. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2023-5504? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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