Path Traversal in Xwiki
CVE-2023-37913
XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Starting in version 3.5-milestone-1 and prior to versions 14.10.8 and 15.3-rc-1, triggering the office converter with a specially crafted file name allows writing the attachment's content to an attacker-controlled location on the server as long as the Java process has write access to that location. In particular in the combination with attachment moving, a feature introduced in XWiki 14.0, this is easy to reproduce but it also possible to reproduce in versions as old as XWiki 3.5 by uploading the attachment through the REST API which doesn't remove `/` or `\` from the filename. As the mime type of the attachment doesn't matter for the exploitation, this could e.g., be used to replace the `jar`-file of an extension which would allow executing arbitrary Java code and thus impact the confidentiality, integrity and availability of the XWiki installation. This vulnerability has been patched in XWiki 14.10.8 and 15.3RC1. There are no known workarounds apart from disabling the office converter.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.011 (63.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000
Affected products
- Xwiki
- Xwiki Xwiki-Platform — versions >= 3.5-milestone-1, < 14.10.8, >= 15.0-rc-1, < 15.3-rc-1
Weakness classification (CWE)
References
- github.com/xwiki/xwiki-platform/security/advisories/GHSA-vcvr-v426-3m3m (Patch, Vendor Advisory)
- github.com/xwiki/xwiki-platform/commit/45d182a4141ff22f3ff289cf71e4669bdc714544 (Patch)
- jira.xwiki.org/browse/XWIKI-20715 (Exploit, Patch, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-37913?
- CVE-2023-37913 is a critical-severity vulnerability in Xwiki, classified under Path Traversal. CVSS score: 9.9/10. Published 2023-10-25.
- How severe is CVE-2023-37913?
- Critical severity. CVSS v3 base score is 9.9 out of 10.