CVE-2023-41044: Graylog2 server Path Traversal Vulnerability

LOW
Advisory Identifier: GHSA-2q4p-f6gf-mqr5
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CVSS 3.3
CWE-22
Published
Advisory Summary

CVE-2023-41044 is a LOW (CVSS 3.3) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Graylog2 server libraries in the Maven ecosystem. The issue involves graylog server has partial path traversal vulnerability in support bundle feature. Remediation is available by upgrading affected packages to version 5.1.3.

CVE-2023-41044 at a Glance

CVE Identifier CVE-2023-41044
GHSA Identifier GHSA-2q4p-f6gf-mqr5
Severity LOW
CVSS v3.1 Base Score 3.3
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Graylog2 server
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 3.3

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality Low (C:L)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2023-41044

To remediate this vulnerability, upgrade all affected Graylog2 server dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.graylog2:graylog2-server fixed: 5.1.3 
<dependency>
    <groupId>org.graylog2</groupId>
    <artifactId>graylog2-server</artifactId>
    <version>5.1.3</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree -Dincludes=org.graylog2

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-41044, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.graylog2

Analyze the terminal output to locate any version of Graylog2 server in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.1.3), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.graylog2 command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal'), where the product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. In Graylog2 server, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A partial path traversal vulnerability exists in Graylog's [Support Bundle](https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm) feature. The vulnerability is caused by incorrect user input validation in an HTTP API resource. Thanks to weiweiwei9811 for reporting this vulnerability and providing detailed information. ### Impact 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` - `/var/lib/graylog-server/support-bundlesdirectory` For the [Graylog](https://hub.docker.com/r/graylog/graylog) and [Graylog Enterprise](https://hub.docker.com/r/graylog/graylog-enterprise) Docker images, the `data_dir` is set to `/usr/share/graylog/data` by default. ### Patches The vulnerability is fixed in Graylog version 5.1.3 and later. ### Workarounds 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}` - `DELETE /api/system/debug/support/bundle/{filename}`

CVE-2023-41044 Affected Graylog2 server Versions

1 component(s)
Fixed Versions:
5.1.3
Product / Package Ecosystem Affected Versions Fixed Version
org.graylog2:graylog2-server
maven/org.graylog2/graylog2-server
Maven
≥ 5.1.0
< 5.1.3
5.1.3

References

Graylog2 server Source Repository REPOSITORY
https://github.com/Graylog2/graylog2-server
GitHub Advisory / Wiki ADVISORY
https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-2q4p-f6gf-mqr5
NVD — CVE-2023-41044 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-41044
Security Fix Commit FIX COMMIT
https://github.com/Graylog2/graylog2-server/commit/02b8792e6f4b829f0c1d87fcbf2d58b73458b938
go2docs.graylog.org/5-1/making_sense_of... WEB
https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm

Frequently Asked Questions

What is CVE-2023-41044?
CVE-2023-41044 is a security vulnerability in Graylog2 server involving Graylog server has partial path traversal vulnerability in Support Bundle feature under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Graylog2 server versions are affected?
Affected versions include releases prior to 5.1.3 across affected packages: org.graylog2:graylog2-server.
What version fixes CVE-2023-41044?
Upgrading to 5.1.3 (or the latest patched release for your respective branch) resolves the vulnerability.
Is graylog2-server affected?
Yes, org.graylog2:graylog2-server is affected in releases prior to 5.1.3. Upgrade your dependency to 5.1.3 or later.
What is the CVSS score of CVE-2023-41044?
CVE-2023-41044 has a CVSS v3.1 base score of 3.3 (LOW) with vector string CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N.
What CWE is associated with CVE-2023-41044?
CVE-2023-41044 is classified under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.).
How can I check Maven dependencies for CVE-2023-41044?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.graylog2'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-2q4p-f6gf-mqr5",
  "modified" : "2023-08-31T18:52:56Z",
  "published" : "2023-07-06T20:53:15Z",
  "aliases" : [ "CVE-2023-41044" ],
  "summary" : "Graylog server has partial path traversal vulnerability in Support Bundle feature",
  "details" : "A partial path traversal vulnerability exists in Graylog's [Support Bundle](https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm) feature. The vulnerability is caused by incorrect user input validation in an HTTP API resource.\n\nThanks to weiweiwei9811 for reporting this vulnerability and providing detailed information.\n\n### Impact\n\nGraylog'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.\n\nThe 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`.\n\nDue 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.\n\nThe vulnerability would allow the download or deletion of files in the following example directories.\n\n- `/var/lib/graylog-server/support-bundle-test`\n- `/var/lib/graylog-server/support-bundlesdirectory`\n\nFor the [Graylog](https://hub.docker.com/r/graylog/graylog) and [Graylog Enterprise](https://hub.docker.com/r/graylog/graylog-enterprise) Docker images, the `data_dir` is set to `/usr/share/graylog/data` by default.\n\n### Patches\n\nThe vulnerability is fixed in Graylog version 5.1.3 and later.\n\n### Workarounds\n\n\nBlock all HTTP requests to the following HTTP API endpoints by using a reverse proxy server in front of Graylog.\n\n- `GET /api/system/debug/support/bundle/download/{filename}`\n- `DELETE /api/system/debug/support/bundle/{filename}`\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.graylog2:graylog2-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.1.0"
      }, {
        "fixed" : "5.1.3"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Graylog2/graylog2-server/security/advisories/GHSA-2q4p-f6gf-mqr5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-41044"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Graylog2/graylog2-server/commit/02b8792e6f4b829f0c1d87fcbf2d58b73458b938"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Graylog2/graylog2-server"
  }, {
    "type" : "WEB",
    "url" : "https://go2docs.graylog.org/5-1/making_sense_of_your_log_data/cluster_support_bundle.htm"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-06T20:53:15Z",
    "nvd_published_at" : "2023-08-31T18:15:09Z"
  }
}