CVE-2020-29555: Path Traversal
First published: Mon Mar 15 2021(Updated: )
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.)
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/getgrav/grav | <1.6.30 | 1.6.30 |
| composer/getgrav/grav | >=1.7.0-beta.1<=1.7.0-rc.17 | |
| Getgrav | <1.7.0 | |
| Getgrav | =1.7.0-beta1 | |
| Getgrav | =1.7.0-beta10 | |
| Getgrav | =1.7.0-beta2 | |
| Getgrav | =1.7.0-beta3 | |
| Getgrav | =1.7.0-beta4 | |
| Getgrav | =1.7.0-beta5 | |
| Getgrav | =1.7.0-beta6 | |
| Getgrav | =1.7.0-beta7 | |
| Getgrav | =1.7.0-beta8 | |
| Getgrav | =1.7.0-beta9 | |
| Getgrav | =1.7.0-rc1 | |
| Getgrav | =1.7.0-rc10 | |
| Getgrav | =1.7.0-rc11 | |
| Getgrav | =1.7.0-rc12 | |
| Getgrav | =1.7.0-rc13 | |
| Getgrav | =1.7.0-rc14 | |
| Getgrav | =1.7.0-rc15 | |
| Getgrav | =1.7.0-rc16 | |
| Getgrav | =1.7.0-rc17 | |
| Getgrav | =1.7.0-rc2 | |
| Getgrav | =1.7.0-rc20 | |
| Getgrav | =1.7.0-rc3 | |
| Getgrav | =1.7.0-rc4 | |
| Getgrav | =1.7.0-rc5 | |
| Getgrav | =1.7.0-rc6 | |
| Getgrav | =1.7.0-rc7 | |
| Getgrav | =1.7.0-rc8 | |
| Getgrav | =1.7.0-rc9 |
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Reference Links
- https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav/
- https://nvd.nist.gov/vuln/detail/CVE-2020-29555
- https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav
- https://github.com/advisories/GHSA-gpmf-q5jh-hjx4 (Advisory)
Frequently Asked Questions
What is CVE-2020-29555?
CVE-2020-29555 is a vulnerability in Grav CMS that allows an authenticated attacker to delete arbitrary files on the server.
How severe is CVE-2020-29555?
CVE-2020-29555 has a severity score of 8.1 (high).
Is an unauthenticated attacker able to exploit CVE-2020-29555?
Yes, an unauthenticated attacker can also exploit CVE-2020-29555.
How can I fix CVE-2020-29555?
To fix CVE-2020-29555, update Grav CMS to version 1.7.0-rc.18 or later.
Where can I find more information about CVE-2020-29555?
You can find more information about CVE-2020-29555 at this link: https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav/
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