CVE-2022-22821: Nemo toolkit Path Traversal Vulnerability

MODERATE
Advisory Identifier: GHSA-9hg3-hmmf-c3gr
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CVSS 4.4
CWE-22
Published
Advisory Summary

CVE-2022-22821 is a MODERATE (CVSS 4.4) path traversal vulnerability (CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')) affecting Nemo toolkit libraries in the PyPI ecosystem. The issue involves path traversal in nemo-toolkit. Remediation is available by upgrading affected packages to version 1.6.0.

CVE-2022-22821 at a Glance

CVE Identifier CVE-2022-22821
GHSA Identifier GHSA-9hg3-hmmf-c3gr
Severity MODERATE
CVSS v3.1 Base Score 4.4
CWE Classification CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Affected Product Nemo toolkit
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 4.4

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

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

How to Fix CVE-2022-22821

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

nemo-toolkit fixed: 1.6.0 
pip install nemo-toolkit>=1.6.0
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 nemo-toolkit

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2022-22821, inspect your installed packages using pip:

pip show nemo-toolkit

Analyze the terminal output to locate any version of Nemo toolkit in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.6.0), your application is affected.

Note: The pip show nemo-toolkit 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 Nemo toolkit, 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

NVIDIA NeMo before 1.6.0 contains a vulnerability in ASR WebApp, in which ../ Path Traversal may lead to deletion of any directory when admin privileges are available.

CVE-2022-22821 Affected Nemo toolkit Versions

1 component(s)
Fixed Versions:
1.6.0
Product / Package Ecosystem Affected Versions Fixed Version
nemo-toolkit
pypi/nemo-toolkit
PyPI
< 1.6.0
1.6.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/NVIDIA/NeMo/security/advisories/GHSA-rpx7-33j2-xx9x
NVD — CVE-2022-22821 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-22821
Nemo toolkit Source Repository REPOSITORY
https://github.com/NVIDIA/NeMo

Frequently Asked Questions

What is CVE-2022-22821?
CVE-2022-22821 is a security vulnerability in Nemo toolkit involving Path Traversal in nemo-toolkit under CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal').
Which Nemo toolkit versions are affected?
Affected versions include releases prior to 1.6.0 across affected packages: nemo-toolkit.
What version fixes CVE-2022-22821?
Upgrading to 1.6.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is nemo-toolkit affected?
Yes, nemo-toolkit is affected in releases prior to 1.6.0. Upgrade your dependency to 1.6.0 or later.
What is the CVSS score of CVE-2022-22821?
CVE-2022-22821 has a CVSS v3.1 base score of 4.4 (MODERATE) with vector string CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N.
What CWE is associated with CVE-2022-22821?
CVE-2022-22821 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-2022-22821?
Run the dependency tree command: 'pip show nemo-toolkit'. 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-9hg3-hmmf-c3gr",
  "modified" : "2022-09-08T00:00:03Z",
  "published" : "2022-01-11T00:00:48Z",
  "aliases" : [ "CVE-2022-22821" ],
  "summary" : "Path Traversal in nemo-toolkit",
  "details" : "NVIDIA NeMo before 1.6.0 contains a vulnerability in ASR WebApp, in which ../ Path Traversal may lead to deletion of any directory when admin privileges are available.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "nemo-toolkit"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.6.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/NVIDIA/NeMo/security/advisories/GHSA-rpx7-33j2-xx9x"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-22821"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/NVIDIA/NeMo"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-22" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-08T00:00:03Z",
    "nvd_published_at" : "2022-01-10T14:12:00Z"
  }
}