CVE-2015-1326: Python dbusmock Improper Input Validation Vulnerability

HIGH
Advisory Identifier: GHSA-74xw-82v7-hmrm
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CVSS 8.8
CWE-20
Published
Advisory Summary

CVE-2015-1326 is a HIGH (CVSS 8.8) improper input validation vulnerability (CWE-20: Improper Input Validation) affecting Python dbusmock libraries in the PyPI ecosystem. The issue involves improper input validation in python-dbusmock. Remediation is available by upgrading affected packages to version 0.15.1.

CVE-2015-1326 at a Glance

CVE Identifier CVE-2015-1326
GHSA Identifier GHSA-74xw-82v7-hmrm
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-20: Improper Input Validation
Affected Product Python dbusmock
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

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

How to Fix CVE-2015-1326

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

python-dbusmock fixed: 0.15.1 
pip install python-dbusmock>=0.15.1
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 python-dbusmock

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2015-1326, inspect your installed packages using pip:

pip show python-dbusmock

Analyze the terminal output to locate any version of Python dbusmock in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.15.1), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-20: Improper Input Validation, where the product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. In Python dbusmock, 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

python-dbusmock before version 0.15.1 AddTemplate() D-Bus method call or DBusTestCase.spawn_server_template() method could be tricked into executing malicious code if an attacker supplies a .pyc file.

CVE-2015-1326 Affected Python dbusmock Versions

1 component(s)
Fixed Versions:
0.15.1
Product / Package Ecosystem Affected Versions Fixed Version
python-dbusmock
pypi/python-dbusmock
PyPI
< 0.15.1
0.15.1

References

NVD — CVE-2015-1326 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-1326
Security Fix Commit FIX COMMIT
https://github.com/martinpitt/python-dbusmock/commit/4e7d0df9093
Python dbusmock Source Repository REPOSITORY
https://github.com/martinpitt/python-dbusmock
Python dbusmock Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/python-dbusmock/PYSEC-2019-155.yaml

Frequently Asked Questions

What is CVE-2015-1326?
CVE-2015-1326 is a security vulnerability in Python dbusmock involving Improper Input Validation in python-dbusmock under CWE-20: Improper Input Validation.
Which Python dbusmock versions are affected?
Affected versions include releases prior to 0.15.1 across affected packages: python-dbusmock.
What version fixes CVE-2015-1326?
Upgrading to 0.15.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is python-dbusmock affected?
Yes, python-dbusmock is affected in releases prior to 0.15.1. Upgrade your dependency to 0.15.1 or later.
What is the CVSS score of CVE-2015-1326?
CVE-2015-1326 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2015-1326?
CVE-2015-1326 is classified under CWE-20: Improper Input Validation (The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.).
How can I check PyPI dependencies for CVE-2015-1326?
Run the dependency tree command: 'pip show python-dbusmock'. 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-82v7-hmrm",
  "modified" : "2024-10-15T16:37:14Z",
  "published" : "2019-04-23T16:04:36Z",
  "aliases" : [ "CVE-2015-1326" ],
  "summary" : "Improper Input Validation in python-dbusmock",
  "details" : "python-dbusmock before version 0.15.1 AddTemplate() D-Bus method call or DBusTestCase.spawn_server_template() method could be tricked into executing malicious code if an attacker supplies a .pyc file.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "python-dbusmock"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.15.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-1326"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/martinpitt/python-dbusmock/commit/4e7d0df9093"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/martinpitt/python-dbusmock"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/python-dbusmock/PYSEC-2019-155.yaml"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2019-04-23T16:02:12Z",
    "nvd_published_at" : "2019-04-22T16:29:00Z"
  }
}