CVE-2023-48299: Torchserve TorchServe ZipSlip Vulnerability

MODERATE
Advisory Identifier: GHSA-m2mj-pr4f-h9jp
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CVSS 5.3
CWE-22
Published
Advisory Summary

CVE-2023-48299 is a MODERATE (CVSS 5.3) torchserve zipslip vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Torchserve libraries in the PyPI ecosystem. The issue involves torchserve zipslip. Remediation is available by upgrading affected packages to version 0.9.0.

CVE-2023-48299 at a Glance

CVE Identifier CVE-2023-48299
GHSA Identifier GHSA-m2mj-pr4f-h9jp
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Torchserve
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 5.3

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:N/I:L/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 None (C:N)
Integrity Low (I:L)
Availability None (A:N)

How to Fix CVE-2023-48299

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

torchserve fixed: 0.9.0 
pip install torchserve>=0.9.0
Verify Direct and Transitive Dependencies

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

pip show torchserve

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-48299, inspect your installed packages using pip:

pip show torchserve

Analyze the terminal output to locate any version of Torchserve in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.0), your application is affected.

Note: The pip show torchserve command checks currently installed packages in your active Python environment.

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 Torchserve, 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 Using the model/workflow management API, there is a chance of uploading potentially harmful archives that contain files that are extracted to any location on the filesystem that is within the process permissions. Leveraging this issue could aid third-party actors in hiding harmful code in open-source/public models, which can be downloaded from the internet, and take advantage of machines running Torchserve. ### Patches The ZipSlip issue in TorchServe has been fixed by validating the paths of files contained within a zip archive before extracting them: https://github.com/pytorch/serve/pull/2634 TorchServe release 0.9.0 includes fixes to address the ZipSlip vulnerability: https://github.com/pytorch/serve/releases/tag/v0.9.0 ### References https://github.com/pytorch/serve/pull/2634 https://github.com/pytorch/serve/releases/tag/v0.9.0 ### Credit We would like to thank Oligo Security for responsibly disclosing this issue. If you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.

CVE-2023-48299 Affected Torchserve Versions

1 component(s)
Fixed Versions:
0.9.0
Product / Package Ecosystem Affected Versions Fixed Version
torchserve
pypi/torchserve
PyPI
≥ 0.1.0
< 0.9.0
0.9.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/pytorch/serve/security/advisories/GHSA-m2mj-pr4f-h9jp
NVD — CVE-2023-48299 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-48299
Torchserve Source Repository REPOSITORY
https://github.com/pytorch/serve/pull/2634
Security Fix Commit FIX COMMIT
https://github.com/pytorch/serve/commit/bfb3d42396727614aef625143b4381e64142f9bb
Torchserve Source Repository REPOSITORY
https://github.com/pytorch/serve
Torchserve Release RELEASE
https://github.com/pytorch/serve/releases/tag/v0.9.0

Frequently Asked Questions

What is CVE-2023-48299?
CVE-2023-48299 is a security vulnerability in Torchserve involving TorchServe ZipSlip under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Torchserve versions are affected?
Affected versions include releases prior to 0.9.0 across affected packages: torchserve.
What version fixes CVE-2023-48299?
Upgrading to 0.9.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is torchserve affected?
Yes, torchserve is affected in releases prior to 0.9.0. Upgrade your dependency to 0.9.0 or later.
What is the CVSS score of CVE-2023-48299?
CVE-2023-48299 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2023-48299?
CVE-2023-48299 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 PyPI dependencies for CVE-2023-48299?
Run the dependency tree command: 'pip show torchserve'. 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-m2mj-pr4f-h9jp",
  "modified" : "2023-11-21T21:33:46Z",
  "published" : "2023-11-21T01:40:20Z",
  "aliases" : [ "CVE-2023-48299" ],
  "summary" : "TorchServe ZipSlip",
  "details" : "### Impact\nUsing the model/workflow management API, there is a chance of uploading potentially harmful archives that contain files that are extracted to any location on the filesystem that is within the process permissions. Leveraging this issue could aid third-party actors in hiding harmful code in open-source/public models, which can be downloaded from the internet, and take advantage of machines running Torchserve.\n\n### Patches\nThe ZipSlip issue in TorchServe has been fixed by validating the paths of files contained within a zip archive before extracting them: https://github.com/pytorch/serve/pull/2634\n\nTorchServe release 0.9.0 includes fixes to address the ZipSlip vulnerability:\nhttps://github.com/pytorch/serve/releases/tag/v0.9.0\n\n### References\nhttps://github.com/pytorch/serve/pull/2634\nhttps://github.com/pytorch/serve/releases/tag/v0.9.0\n\n### Credit\nWe would like to thank Oligo Security for responsibly disclosing this issue.\n\nIf you have any questions or comments about this advisory, we ask that you contact AWS Security via our [vulnerability reporting page](https://aws.amazon.com/security/vulnerability-reporting) or directly via email to [aws-security@amazon.com](mailto:aws-security@amazon.com). Please do not create a public GitHub issue.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
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    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
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      }, {
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      } ]
    } ]
  } ],
  "references" : [ {
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  }, {
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  }, {
    "type" : "WEB",
    "url" : "https://github.com/pytorch/serve/commit/bfb3d42396727614aef625143b4381e64142f9bb"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pytorch/serve"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pytorch/serve/releases/tag/v0.9.0"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-21T01:40:20Z",
    "nvd_published_at" : "2023-11-21T21:15:09Z"
  }
}