CVE-2014-1928: Python gnupg Python-gnupg's Shell_quote Function Does Not Vulnerability

HIGH
Advisory Identifier: GHSA-2jc8-4r6g-282j
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CVSS 7.5
CWE-20
Published
Advisory Summary

CVE-2014-1928 is a HIGH (CVSS 7.5) python-gnupg's shell_quote function does not vulnerability (CWE-20: Improper Input Validation) affecting Python gnupg libraries in the PyPI ecosystem. The issue involves python-gnupg's shell_quote function does not properly escape characters. Remediation is available by upgrading affected packages to version 0.3.6.

CVE-2014-1928 at a Glance

CVE Identifier CVE-2014-1928
GHSA Identifier GHSA-2jc8-4r6g-282j
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-20: Improper Input Validation
Affected Product Python gnupg
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:H/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 High (I:H)
Availability None (A:N)

How to Fix CVE-2014-1928

To remediate this vulnerability, upgrade all affected Python gnupg 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-gnupg fixed: 0.3.6 
pip install python-gnupg>=0.3.6
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-gnupg

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2014-1928, inspect your installed packages using pip:

pip show python-gnupg

Analyze the terminal output to locate any version of Python gnupg in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.3.6), your application is affected.

Note: The pip show python-gnupg 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 gnupg, 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

The shell_quote function in python-gnupg 0.3.5 does not properly escape characters, which allows context-dependent attackers to execute arbitrary code via shell metacharacters in unspecified vectors, as demonstrated using "\" (backslash) characters to form multi-command sequences, a different vulnerability than CVE-2014-1927. NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-7323.

CVE-2014-1928 Affected Python gnupg Versions

1 component(s)
Fixed Versions:
0.3.6
Product / Package Ecosystem Affected Versions Fixed Version
python-gnupg
pypi/python-gnupg
PyPI
≥ 0.3.5
< 0.3.6
All 1 versions
0.3.5
0.3.6

References

NVD — CVE-2014-1928 NVD
https://nvd.nist.gov/vuln/detail/CVE-2014-1928
code.google.com/p/python-gnupg PACKAGE
https://code.google.com/p/python-gnupg
code.google.com/p/python-gnupg/issu... WEB
https://code.google.com/p/python-gnupg/issues/detail?id=98
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-2jc8-4r6g-282j
Python gnupg Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/python-gnupg/PYSEC-2014-91.yaml
seclists.org/oss-sec/2014/q1/246 WEB
http://seclists.org/oss-sec/2014/q1/246
seclists.org/oss-sec/2014/q1/294 WEB
http://seclists.org/oss-sec/2014/q1/294
Python gnupg Security Information SECURITY
http://www.debian.org/security/2014/dsa-2946

Frequently Asked Questions

What is CVE-2014-1928?
CVE-2014-1928 is a security vulnerability in Python gnupg involving python-gnupg's shell_quote function does not properly escape characters under CWE-20: Improper Input Validation.
Which Python gnupg versions are affected?
Affected versions include releases prior to 0.3.6 across affected packages: python-gnupg.
What version fixes CVE-2014-1928?
Upgrading to 0.3.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is python-gnupg affected?
Yes, python-gnupg is affected in releases prior to 0.3.6. Upgrade your dependency to 0.3.6 or later.
What is the CVSS score of CVE-2014-1928?
CVE-2014-1928 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:H/A:N.
What CWE is associated with CVE-2014-1928?
CVE-2014-1928 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-2014-1928?
Run the dependency tree command: 'pip show python-gnupg'. 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-2jc8-4r6g-282j",
  "modified" : "2024-10-25T20:46:24Z",
  "published" : "2018-11-06T23:13:02Z",
  "aliases" : [ "CVE-2014-1928" ],
  "summary" : "python-gnupg's shell_quote function does not properly escape characters",
  "details" : "The shell_quote function in python-gnupg 0.3.5 does not properly escape characters, which allows context-dependent attackers to execute arbitrary code via shell metacharacters in unspecified vectors, as demonstrated using \"\\\" (backslash) characters to form multi-command sequences, a different vulnerability than CVE-2014-1927.  NOTE: this vulnerability exists because of an incomplete fix for CVE-2013-7323.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "python-gnupg"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.3.5"
      }, {
        "fixed" : "0.3.6"
      } ]
    } ],
    "versions" : [ "0.3.5" ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2014-1928"
  }, {
    "type" : "PACKAGE",
    "url" : "https://code.google.com/p/python-gnupg"
  }, {
    "type" : "WEB",
    "url" : "https://code.google.com/p/python-gnupg/issues/detail?id=98"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-2jc8-4r6g-282j"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/python-gnupg/PYSEC-2014-91.yaml"
  }, {
    "type" : "WEB",
    "url" : "http://seclists.org/oss-sec/2014/q1/246"
  }, {
    "type" : "WEB",
    "url" : "http://seclists.org/oss-sec/2014/q1/294"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2014/dsa-2946"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T20:52:26Z",
    "nvd_published_at" : null
  }
}