WPvivid Backup 0.9.76 - Authenticated (Administrator+) Arbitrary File Deletion

2022-08-29 00:00
Anonymous

Strategic Overview

Status
Patched in 0.9.77
Affected Plugin
WPvivid — Backup, Migration & Staging
Affected Version
0.9.76
CVSS
6.5Medium
Weakness type
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CVE
CVE pending
View all WPvivid — Backup, Migration & Staging vulnerabilities

At a glance

This record tracks a medium-severity Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in the WPvivid WordPress plugin, affecting versions 0.9.76. It carries a CVSS score of 6.5 (reachable over the network; low attack complexity; high integrity, availability impact). Exploitation requires an authenticated account at Administrator level or above. The issue is fixed in version 0.9.77; sites on affected versions should update now. Disclosed August 2022.

Vulnerability Overview

The WPvivid Backup plugin for WordPress is vulnerable to Path Traversal in version 0.9.76 due to a newly introduced delete_upload_incomplete_backup AJAX action. This allows administrator-level attackers to delete arbitrary files on the server.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user. A successful exploit has high impact on integrity, availability.

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Reaching this weakness in WPvivid 0.9.76 takes an account at Administrator level or above. Path traversal happens when user-controlled text is used to build a filesystem path without being constrained to an intended directory, so sequences like ../ walk the resolved path somewhere else.

Depending on the operation, it means reading files outside the intended folder — wp-config.php being the usual target — or writing to and deleting paths the web server can touch. For WPvivid the fix is 0.9.77: builds 0.9.76 are affected, anything from 0.9.77 onward is not.

Remediation

Update to version 0.9.77, or a newer patched version

How does WordSec protect against this?

An attacker needs Administrator access first, so the firewall sees the attempt as traffic from a logged-in account: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: WPvivid 0.9.77 closes this, and updating the plugin is the step that ends it.

  • Firewall
  • Alerts

External References

https://www.wordfence.com/threat-intel/vulnerabilities/id/af7adacf-7189-401f-b7c9-845eb328ca76

Related records

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