CVE-2023-41044
LowCVSS 3.3Exploitation Probability (EPSS)
Low risk43th percentile — higher than 43% of all known CVEs
Summary
Graylog has a partial path traversal vulnerability in the `Support Bundle` feature that allows an attacker with valid Admin role credentials to download or delete files in sibling directories. The issue is caused by improper input validation in an HTTP API resource.
Risk Assessment
This vulnerability could lead to unauthorized access to sensitive files or their deletion, posing a significant threat to data security within the organization.
Recommendation
It is recommended to upgrade Graylog to version 5.1.3 or later. Users unable to upgrade should block all HTTP requests to specific API endpoints using a reverse proxy server.
Original NVD description (English source)
Graylog is a free and open log management platform. A partial path traversal vulnerability exists in Graylog's `Support Bundle` feature. The vulnerability is caused by incorrect user input validation in an HTTP API resource. Graylog's Support Bundle feature allows an attacker with valid Admin role credentials to download or delete files in sibling directories of the support bundle directory. The default `data_dir` in operating system packages (DEB, RPM) is set to `/var/lib/graylog-server`. The data directory for the Support Bundle feature is always `<data_dir>/support-bundle`. Due to the partial path traversal vulnerability, an attacker with valid Admin role credentials can read or delete files in directories that start with a `/var/lib/graylog-server/support-bundle` directory name. The vulnerability would allow the download or deletion of files in the following example directories: `/var/lib/graylog-server/support-bundle-test` and `/var/lib/graylog-server/support-bundlesdirectory`. For the Graylog Docker images, the `data_dir` is set to `/usr/share/graylog/data` by default. This vulnerability is fixed in Graylog version 5.1.3 and later. Users are advised to upgrade. Users unable to upgrade should block all HTTP requests to the following HTTP API endpoints by using a reverse proxy server in front of Graylog. `GET /api/system/debug/support/bundle/download/{filename}` and `DELETE /api/system/debug/support/bundle/{filename}`.