Vulnerabilities in pkg:pypi/bounter

PACKAGE
Advisory Identifier: GHSA-74xw-gwfm-7pv7
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Advisory Summary

CVE-2021-41497 is a HIGH (CVSS 7.5) bounter null pointer reference vulnerability (CWE-476: NULL Pointer Dereference) affecting Bounter libraries in the PyPI ecosystem. The issue involves bounter null pointer reference. Remediation is available in the latest vendor maintenance releases.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:pypi/bounter

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:pypi/bounter. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-74xw-gwfm-7pv7 CVE-2021-41497 HIGH bounter Null pointer reference

CVE-2021-41497 at a Glance

CVE Identifier CVE-2021-41497
GHSA Identifier GHSA-74xw-gwfm-7pv7
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-476: NULL Pointer Dereference
Affected Product Bounter
Package Ecosystem PyPI
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:N/I:N/A:H).

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 None (I:N)
Availability High (A:H)

How to Fix CVE-2021-41497

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

bounter fixed: Latest secure release 
pip install bounter>=Latest secure release
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 bounter

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2021-41497, inspect your installed packages using pip:

pip show bounter

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

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-476: NULL Pointer Dereference, where the product dereferences a pointer that it expects to be valid but is null. In Bounter, 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

Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.

CVE-2021-41497 Affected Bounter Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
bounter
pypi/bounter
PyPI
≤ 1.2.0

References

NVD — CVE-2021-41497 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-41497
Bounter Source Repository REPOSITORY
https://github.com/RaRe-Technologies/bounter/issues/47
Bounter Source Repository REPOSITORY
https://github.com/RaRe-Technologies/bounter
Bounter Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/bounter/PYSEC-2021-880.yaml

Frequently Asked Questions

What is CVE-2021-41497?
CVE-2021-41497 is a security vulnerability in Bounter involving bounter Null pointer reference under CWE-476: NULL Pointer Dereference.
Which Bounter versions are affected?
Affected versions include releases prior to current release patches across affected packages: bounter.
What version fixes CVE-2021-41497?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is bounter affected?
Yes, bounter is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2021-41497?
CVE-2021-41497 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:N/I:N/A:H.
What CWE is associated with CVE-2021-41497?
CVE-2021-41497 is classified under CWE-476: NULL Pointer Dereference (The product dereferences a pointer that it expects to be valid but is NULL.).
How can I check PyPI dependencies for CVE-2021-41497?
Run the dependency tree command: 'pip show bounter'. 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-74xw-gwfm-7pv7",
  "modified" : "2024-11-21T22:18:17Z",
  "published" : "2021-12-18T00:00:40Z",
  "aliases" : [ "CVE-2021-41497" ],
  "summary" : "bounter Null pointer reference",
  "details" : "Null pointer reference in CMS_Conservative_increment_obj in RaRe-Technologies bounter version 1.01 and 1.10, allows attackers to conduct Denial of Service attacks by inputting a huge width of hash bucket.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "bounter"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-41497"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/RaRe-Technologies/bounter/issues/47"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/RaRe-Technologies/bounter"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/bounter/PYSEC-2021-880.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-476" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-11-21T22:18:17Z",
    "nvd_published_at" : "2021-12-17T21:15:00Z"
  }
}