Description

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}`.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  3.8 LOW

Vector:  CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

CNA:  GitHub, Inc.

Base Score:  3.3 LOW

Vector:  CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/Graylog2/graylog2-server/commit/02b8792e6f4b829f0c1d87fcbf2d58b73458b938	Patch
https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-2q4p-f6gf-mqr5	Exploit  Mitigation  Vendor Advisory
https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm	Product

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-22	Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')	GitHub, Inc.

Known Affected Software Configurations Switch to CPE 2.2

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Change History

1 change records found show changes

Initial Analysis by NIST 9/06/2023 3:48:10 PM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:graylog:graylog:*:*:*:*:*:*:*:* versions from (including) 5.1.0 up to (excluding) 5.1.3
Added	CVSS V3.1		NIST AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
Changed	Reference Type	https://github.com/Graylog2/graylog2-server/commit/02b8792e6f4b829f0c1d87fcbf2d58b73458b938 No Types Assigned	https://github.com/Graylog2/graylog2-server/commit/02b8792e6f4b829f0c1d87fcbf2d58b73458b938 Patch
Changed	Reference Type	https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-2q4p-f6gf-mqr5 No Types Assigned	https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-2q4p-f6gf-mqr5 Exploit, Mitigation, Vendor Advisory
Changed	Reference Type	https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm No Types Assigned	https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm Product