CVE-2020-29555 Grav CMS Arbitrary File Deletion
Authenticated or unauthenticated attackers can delete arbitrary files on the server via path traversal in Grav CMS BackupDelete functionality.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-29555?
CVE-2020-29555 is a high-severity path traversal vulnerability in n/a, published on 15 Mar 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The BackupDelete functionality in Grav CMS through 1.7.0-rc.17 allows an authenticated attacker to delete arbitrary files on the underlying server by exploiting a path-traversal technique. (This vulnerability can also be exploited by an unauthenticated attacker due to a lack of CSRF protection.)
Weakness: CWE-22
Which versions are affected by CVE-2020-29555?
4 open source packages ship an affected version, including getgrav/grav. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
getgrav/grav Packagist | All versions | 1.6.30 |
getgrav/grav Packagist | All versions | 1.6.30 |
getgrav/grav Packagist | From 1.7.0-beta.1 to 1.7.0-rc.17 | None |
getgrav/grav Packagist | From 1.7.0-beta.1 to 1.7.0-rc.17 | None |
Products include Getgrav Grav Cms.
How do I fix CVE-2020-29555?
Upgrade getgrav/grav to 1.6.30 or later.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2020-29555 being exploited?
There is no known exploitation of CVE-2020-29555 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-gpmf-q5jh-hjx4.