CVE-2023-45823: Github.com/artifacthub/hub Artifact Hub Arbitrary File Read Vulnerability

HIGH
Advisory Identifier: GHSA-hmq4-c2r4-5q8h
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CVSS 7.5
CWE-22
Published
Advisory Summary

CVE-2023-45823 is a HIGH (CVSS 7.5) artifact hub arbitrary file read vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Github.com/artifacthub/hub libraries in the Go ecosystem. The issue involves artifact hub arbitrary file read vulnerability. Remediation is available by upgrading affected packages to version 1.16.0.

CVE-2023-45823 at a Glance

CVE Identifier CVE-2023-45823
GHSA Identifier GHSA-hmq4-c2r4-5q8h
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Github.com/artifacthub/hub
Package Ecosystem Go
Published Date
Last Updated

Security Impact

CVSS: 7.5

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

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

How to Fix CVE-2023-45823

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

github.com/artifacthub/hub fixed: 1.16.0 
Upgrade github.com/artifacthub/hub to 1.16.0
Verify Direct and Transitive Dependencies

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

inspect dependencies for github.com/artifacthub/hub

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-45823, inspect your project dependencies for Github.com/artifacthub/hub:

inspect dependencies for github.com/artifacthub/hub

Analyze the terminal output to locate any version of Github.com/artifacthub/hub in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.16.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 Github.com/artifacthub/hub, 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

### Impact During a security audit of Artifact Hub's code base, a security researcher at [OffSec](https://www.offsec.com/) identified a bug in which by using symbolic links in certain kinds of repositories loaded into Artifact Hub, it was possible to read internal files. Artifact Hub indexes content from a variety of sources, including git repositories. When processing git based repositories, Artifact Hub clones the repository and, depending on the artifact kind, reads some files from it. During this process, in some cases, no validation was done to check if the file was a symbolic link. This made possible to read arbitrary files in the system, potentially leaking sensitive information. ### Patches This issue has been resolved in version [1.16.0](https://artifacthub.io/packages/helm/artifact-hub/artifact-hub?modal=changelog&version=1.16.0).

CVE-2023-45823 Affected Github.com/artifacthub/hub Versions

1 component(s)
Fixed Versions:
1.16.0
Product / Package Ecosystem Affected Versions Fixed Version
github.com/artifacthub/hub
golang/github.com/artifacthub/hub
Go
< 1.16.0
1.16.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/artifacthub/hub/security/advisories/GHSA-hmq4-c2r4-5q8h
NVD — CVE-2023-45823 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-45823
artifacthub.io/packages/helm/artif... WEB
https://artifacthub.io/packages/helm/artifact-hub/artifact-hub?modal=changelog&version=1.16.0
Github.com/artifacthub/hub Source Repository REPOSITORY
https://github.com/artifacthub/hub

Frequently Asked Questions

What is CVE-2023-45823?
CVE-2023-45823 is a security vulnerability in Github.com/artifacthub/hub involving Artifact Hub arbitrary file read vulnerability under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Github.com/artifacthub/hub versions are affected?
Affected versions include releases prior to 1.16.0 across affected packages: github.com/artifacthub/hub.
What version fixes CVE-2023-45823?
Upgrading to 1.16.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/artifacthub/hub affected?
Yes, github.com/artifacthub/hub is affected in releases prior to 1.16.0. Upgrade your dependency to 1.16.0 or later.
What is the CVSS score of CVE-2023-45823?
CVE-2023-45823 has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2023-45823?
CVE-2023-45823 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 Go dependencies for CVE-2023-45823?
Run the dependency tree command: 'inspect dependencies for github.com/artifacthub/hub'. 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-hmq4-c2r4-5q8h",
  "modified" : "2023-10-19T19:35:45Z",
  "published" : "2023-10-19T17:06:42Z",
  "aliases" : [ "CVE-2023-45823" ],
  "summary" : "Artifact Hub arbitrary file read vulnerability",
  "details" : "### Impact\n\nDuring a security audit of Artifact Hub's code base, a security researcher at [OffSec](https://www.offsec.com/) identified a bug in which by using symbolic links in certain kinds of repositories loaded into Artifact Hub, it was possible to read internal files.\n\nArtifact Hub indexes content from a variety of sources, including git repositories. When processing git based repositories, Artifact Hub clones the repository and, depending on the artifact kind, reads some files from it. During this process, in some cases, no validation was done to check if the file was a symbolic link. This made possible to read arbitrary files in the system, potentially leaking sensitive information.\n\n### Patches\n\nThis issue has been resolved in version [1.16.0](https://artifacthub.io/packages/helm/artifact-hub/artifact-hub?modal=changelog&version=1.16.0).",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Go",
      "name" : "github.com/artifacthub/hub"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.16.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/artifacthub/hub/security/advisories/GHSA-hmq4-c2r4-5q8h"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-45823"
  }, {
    "type" : "WEB",
    "url" : "https://artifacthub.io/packages/helm/artifact-hub/artifact-hub?modal=changelog&version=1.16.0"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/artifacthub/hub"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-10-19T17:06:42Z",
    "nvd_published_at" : "2023-10-19T21:15:09Z"
  }
}