Headline
CVE-2018-1002200: Snyk Vulnerability Database | Snyk
plexus-archiver before 3.6.0 is vulnerable to directory traversal, allowing attackers to write to arbitrary files via a …/ (dot dot slash) in an archive entry that is mishandled during extraction. This vulnerability is also known as 'Zip-Slip’.
Threat Intelligence
EPSS 0.12% (46th percentile)
Expand this section
Red Hat
7.3 high
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- Snyk ID SNYK-JAVA-ORGCODEHAUSPLEXUS-31680
- published 31 May 2018
- disclosed 17 Apr 2018
- credit Snyk Security research Team
How to fix?
Upgrade org.codehaus.plexus:plexus-archiverto version 3.6.0 or higher.
Overview
org.codehaus.plexus:plexus-archiver is a Collection of Plexus components to create archives or extract files out of an archive to a directory with a unified Archiver/UnArchiver API whatever the archive format is.
Affected versions of the package are vulnerable to Arbitrary File Write via Archive Extraction (AKA “Zip Slip”).
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