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CVE-2023-6972 Backup Migration <= 1.3.9 - Unauthenticated Path Traversal to Arbitrary File Deletion

Critical 9.8 Published Updated

Unauthenticated attackers can delete arbitrary files via path traversal, potentially leading to site takeover and remote code execution.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-6972?

CVE-2023-6972 is a critical path traversal vulnerability in inisev BackupBliss – Backup & Migration with Free Cloud Storage, published on 23 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The Backup Migration plugin for WordPress is vulnerable to Path Traversal in all versions up to, and including, 1.3.9 via the 'content-backups' and 'content-name', 'content-manifest', or 'content-bmitmp' and 'content-identy' HTTP headers. This makes it possible for unauthenticated attackers to delete arbitrary files, including the wp-config.php file, which can make site takeover and remote code execution possible.

Weakness: CWE-22

Which versions are affected by CVE-2023-6972?

It affects 1 product.

Products include Backupbliss Backup Migration.

How do I fix CVE-2023-6972?

No fix has been published for CVE-2023-6972 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-6972 being exploited?

There is no known exploitation of CVE-2023-6972 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-r363-9gh8-w82j.

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