Arbitrary File Write via Archive Extraction (Zip Slip) Affecting pimcore/pimcore package, versions <10.5.22
Threat Intelligence
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk ID SNYK-PHP-PIMCOREPIMCORE-5661795
- published 31 May 2023
- disclosed 31 May 2023
- credit hi-unc1e
Introduced: 31 May 2023
CVE-2023-2984 Open this link in a new tabHow to fix?
Upgrade pimcore/pimcore to version 10.5.22 or higher.
Overview
pimcore/pimcore is a content & product management framework (CMS/PIM/E-Commerce).
Affected versions of this package are vulnerable to Arbitrary File Write via Archive Extraction (Zip Slip) allowing an attacker to overwrite or modify sensitive files by manipulating the pimcore_log parameter.
PoC
1. /admin/?pimcore_log=foo
2. /admin/?pimcore_log=foo.log\..\..\..\..\..\..\Windows\System32\drivers\etc\hosts
Details
It is exploited using a specially crafted zip archive, that holds path traversal filenames. When exploited, a filename in a malicious archive is concatenated to the target extraction directory, which results in the final path ending up outside of the target folder. For instance, a zip may hold a file with a "../../file.exe" location and thus break out of the target folder. If an executable or a configuration file is overwritten with a file containing malicious code, the problem can turn into an arbitrary code execution issue quite easily.
The following is an example of a zip archive with one benign file and one malicious file. Extracting the malicous file will result in traversing out of the target folder, ending up in /root/.ssh/ overwriting the authorized_keys file:
+2018-04-15 22:04:29 ..... 19 19 good.txt
+2018-04-15 22:04:42 ..... 20 20 ../../../../../../root/.ssh/authorized_keys