CVE-2019-7539: Ipycache Ipycache Is Vulnerable To Code Vulnerability

CRITICAL
Advisory Identifier: GHSA-gcm4-q2pg-xw89
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CVSS 9.6
CWE-502 CWE-94
Published
Advisory Summary

CVE-2019-7539 is a CRITICAL (CVSS 9.6) ipycache is vulnerable to code vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Ipycache libraries in the PyPI ecosystem. The issue involves ipycache is vulnerable to code injection. Remediation is available in the latest vendor maintenance releases.

CVE-2019-7539 at a Glance

CVE Identifier CVE-2019-7539
GHSA Identifier GHSA-gcm4-q2pg-xw89
Severity CRITICAL
CVSS v3.1 Base Score 9.6
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Ipycache
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.6

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:R/S:C/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 Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2019-7539

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

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

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2019-7539, inspect your installed packages using pip:

pip show ipycache

Analyze the terminal output to locate any version of Ipycache 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 ipycache command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Ipycache, 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

A code injection issue was discovered in ipycache versions up to 0.1.4.

CVE-2019-7539 Affected Ipycache Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
ipycache
pypi/ipycache
PyPI
≤ 0.1.4

References

NVD — CVE-2019-7539 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-7539
Ipycache Source Repository REPOSITORY
https://github.com/rossant/ipycache/issues/47
Security Fix Commit FIX COMMIT
https://github.com/adi928/ipycache/commit/9cc7cb891ff169b3e8a6f5e84afd8238f566ad8e
Security Fix Commit FIX COMMIT
https://github.com/adi928/ipycache/commit/c73a726744c90cc2cb200b159edbaf5deddcb753
GitHub Advisory / Wiki ADVISORY
https://github.com/advisories/GHSA-gcm4-q2pg-xw89
Ipycache Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/ipycache/PYSEC-2019-180.yaml
Ipycache Source Repository REPOSITORY
https://github.com/rossant/ipycache

Frequently Asked Questions

What is CVE-2019-7539?
CVE-2019-7539 is a security vulnerability in Ipycache involving ipycache is vulnerable to Code Injection under CWE-502: Deserialization of Untrusted Data.
Which Ipycache versions are affected?
Affected versions include releases prior to current release patches across affected packages: ipycache.
What version fixes CVE-2019-7539?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is ipycache affected?
Yes, ipycache 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-2019-7539?
CVE-2019-7539 has a CVSS v3.1 base score of 9.6 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2019-7539?
CVE-2019-7539 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check PyPI dependencies for CVE-2019-7539?
Run the dependency tree command: 'pip show ipycache'. 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-gcm4-q2pg-xw89",
  "modified" : "2024-09-23T16:03:52Z",
  "published" : "2019-03-25T16:16:55Z",
  "aliases" : [ "CVE-2019-7539" ],
  "summary" : "ipycache is vulnerable to Code Injection",
  "details" : "A code injection issue was discovered in ipycache versions up to 0.1.4.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "ipycache"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.1.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-7539"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/rossant/ipycache/issues/47"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/adi928/ipycache/commit/9cc7cb891ff169b3e8a6f5e84afd8238f566ad8e"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/adi928/ipycache/commit/c73a726744c90cc2cb200b159edbaf5deddcb753"
  }, {
    "type" : "ADVISORY",
    "url" : "https://github.com/advisories/GHSA-gcm4-q2pg-xw89"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/ipycache/PYSEC-2019-180.yaml"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/rossant/ipycache"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502", "CWE-94" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2020-06-16T21:36:49Z",
    "nvd_published_at" : "2019-03-21T21:29:00Z"
  }
}