CVE-2010-1666: Python cjson Improper Restriction Of Operations Within Vulnerability

MODERATE
Advisory Identifier: GHSA-cqmh-mpx2-g633
Share
CWE-119
Published
Advisory Summary

CVE-2010-1666 is a MODERATE improper restriction of operations within vulnerability (CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer) affecting Python cjson libraries in the PyPI ecosystem. The issue involves improper restriction of operations within the bounds of a memory buffer in python-cjson. Remediation is available by upgrading affected packages to version 1.0.5.1.

CVE-2010-1666 at a Glance

CVE Identifier CVE-2010-1666
GHSA Identifier GHSA-cqmh-mpx2-g633
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
Affected Product Python cjson
Package Ecosystem PyPI
Published Date
Last Updated

How to Fix CVE-2010-1666

To remediate this vulnerability, upgrade all affected Python cjson 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-cjson fixed: 1.0.5.1 
pip install python-cjson>=1.0.5.1
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-cjson

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2010-1666, inspect your installed packages using pip:

pip show python-cjson

Analyze the terminal output to locate any version of Python cjson in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 1.0.5.1), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer, where the product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. this may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. In Python cjson, 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

Buffer overflow in Dan Pascu python-cjson 1.0.5, when UCS-4 encoding is enabled, allows context-dependent attackers to cause a denial of service (application crash) or possibly have unspecified other impact via vectors involving crafted Unicode input to the cjson.encode function.

CVE-2010-1666 Affected Python cjson Versions

1 component(s)
Fixed Versions:
1.0.5.1
Product / Package Ecosystem Affected Versions Fixed Version
python-cjson
pypi/python-cjson
PyPI
< 1.0.5.1
1.0.5.1

References

NVD — CVE-2010-1666 NVD
https://nvd.nist.gov/vuln/detail/CVE-2010-1666
Security Fix Commit FIX COMMIT
https://github.com/AGProjects/python-cjson/commit/dc2b8781b8666de5ca707318521f554904fdd690
bugs.launchpad.net/ubuntu/+source/pyth... WEB
https://bugs.launchpad.net/ubuntu/+source/python-cjson/+bug/585274
Python cjson Source Repository REPOSITORY
https://github.com/AGProjects/python-cjson
Python cjson Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/python-cjson/PYSEC-2010-30.yaml
Python cjson Security Information SECURITY
http://www.debian.org/security/2010/dsa-2068

Frequently Asked Questions

What is CVE-2010-1666?
CVE-2010-1666 is a security vulnerability in Python cjson involving Improper Restriction of Operations within the Bounds of a Memory Buffer in python-cjson under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer.
Which Python cjson versions are affected?
Affected versions include releases prior to 1.0.5.1 across affected packages: python-cjson.
What version fixes CVE-2010-1666?
Upgrading to 1.0.5.1 (or the latest patched release for your respective branch) resolves the vulnerability.
Is python-cjson affected?
Yes, python-cjson is affected in releases prior to 1.0.5.1. Upgrade your dependency to 1.0.5.1 or later.
What CWE is associated with CVE-2010-1666?
CVE-2010-1666 is classified under CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer (The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.).
How can I check PyPI dependencies for CVE-2010-1666?
Run the dependency tree command: 'pip show python-cjson'. 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-cqmh-mpx2-g633",
  "modified" : "2024-10-15T16:54:45Z",
  "published" : "2022-05-17T05:49:38Z",
  "aliases" : [ "CVE-2010-1666" ],
  "summary" : "Improper Restriction of Operations within the Bounds of a Memory Buffer in python-cjson",
  "details" : "Buffer overflow in Dan Pascu python-cjson 1.0.5, when UCS-4 encoding is enabled, allows context-dependent attackers to cause a denial of service (application crash) or possibly have unspecified other impact via vectors involving crafted Unicode input to the cjson.encode function.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "python-cjson"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.0.5.1"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 1.0.5"
    }
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2010-1666"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/AGProjects/python-cjson/commit/dc2b8781b8666de5ca707318521f554904fdd690"
  }, {
    "type" : "WEB",
    "url" : "https://bugs.launchpad.net/ubuntu/+source/python-cjson/+bug/585274"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/AGProjects/python-cjson"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/python-cjson/PYSEC-2010-30.yaml"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2010/dsa-2068"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-119" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-08T18:56:28Z",
    "nvd_published_at" : "2010-07-02T19:00:00Z"
  }
}