CVE-2020-29556: Path Traversal
First published: Mon Mar 15 2021(Updated: )
The Backup functionality in Grav CMS through 1.7.0-rc.17 allows an authenticated attacker to read arbitrary local 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 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-2020-29556
- https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav
- https://github.com/advisories/GHSA-r3rg-jrjq-w4mr (Advisory)
Frequently Asked Questions
What is CVE-2020-29556?
CVE-2020-29556 is a vulnerability in Grav CMS that allows an authenticated attacker to read arbitrary local files on the underlying server.
How severe is CVE-2020-29556?
CVE-2020-29556 has a severity rating of 5.5 (medium).
Who is affected by CVE-2020-29556?
Users of Grav CMS versions up to 1.7.0-rc.17 are affected by CVE-2020-29556.
Is authentication required to exploit CVE-2020-29556?
Yes, authentication is required to exploit CVE-2020-29556.
Is there a fix available for CVE-2020-29556?
A fix for CVE-2020-29556 may be available in the latest version of Grav CMS. It is recommended to update to the latest version to mitigate this vulnerability.
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- agent/type
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-r3rg-jrjq-w4mr
- alias/CVE-2020-29556
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- agent/remedy
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