CVE-2023-44464: Pretix Pretix Allows Pillow To Parse Vulnerability

HIGH
Advisory Identifier: GHSA-9jvx-p6mq-fw4v
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CVSS 7.8
Published
Advisory Summary

CVE-2023-44464 is a HIGH (CVSS 7.8) pretix allows pillow to parse vulnerability (General Security Weakness) affecting Pretix libraries in the PyPI ecosystem. The issue involves pretix allows pillow to parse eps files. Remediation is available by upgrading affected packages to version 2023.7.2.

CVE-2023-44464 at a Glance

CVE Identifier CVE-2023-44464
GHSA Identifier GHSA-9jvx-p6mq-fw4v
Severity HIGH
CVSS v3.1 Base Score 7.8
CWE Classification General Security Weakness
Affected Product Pretix
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 7.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H).

Attack Vector Local (AV:L)
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-2023-44464

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

pretix fixed: 2023.7.2 
pip install pretix>=2023.7.2
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 pretix

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2023-44464, inspect your installed packages using pip:

pip show pretix

Analyze the terminal output to locate any version of Pretix in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2023.7.2), your application is affected.

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

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Pretix, 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

pretix before 2023.7.2 allows Pillow to parse EPS files.

CVE-2023-44464 Affected Pretix Versions

1 component(s)
Fixed Versions:
2023.7.2
Product / Package Ecosystem Affected Versions Fixed Version
pretix
pypi/pretix
PyPI
< 2023.7.2
2023.7.2

References

NVD — CVE-2023-44464 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-44464
Security Fix Commit FIX COMMIT
https://github.com/pretix/pretix/commit/8583bfb7d97263e9e923ad5d7f123ca1cadc8f2e
Pretix Source Repository REPOSITORY
https://github.com/pretix/pretix
Pretix Source Repository REPOSITORY
https://github.com/pretix/pretix/compare/v2023.7.1...v2023.7.2
Pretix Source Repository REPOSITORY
https://github.com/pretix/pretix/tags
Pretix Release RELEASE
https://pretix.eu/about/de/blog/20230912-release-2023-7-2
Pretix Security Information SECURITY
https://pretix.eu/about/en/ticketing

Frequently Asked Questions

What is CVE-2023-44464?
CVE-2023-44464 is a security vulnerability in Pretix involving pretix allows Pillow to parse EPS files under General Security Weakness.
Which Pretix versions are affected?
Affected versions include releases prior to 2023.7.2 across affected packages: pretix.
What version fixes CVE-2023-44464?
Upgrading to 2023.7.2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pretix affected?
Yes, pretix is affected in releases prior to 2023.7.2. Upgrade your dependency to 2023.7.2 or later.
What is the CVSS score of CVE-2023-44464?
CVE-2023-44464 has a CVSS v3.1 base score of 7.8 (HIGH) with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2023-44464?
CVE-2023-44464 is classified under General Security Weakness.
How can I check PyPI dependencies for CVE-2023-44464?
Run the dependency tree command: 'pip show pretix'. 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-9jvx-p6mq-fw4v",
  "modified" : "2023-10-02T20:51:43Z",
  "published" : "2023-09-29T06:30:29Z",
  "aliases" : [ "CVE-2023-44464" ],
  "summary" : "pretix allows Pillow to parse EPS files",
  "details" : "pretix before 2023.7.2 allows Pillow to parse EPS files.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
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    },
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      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
        "fixed" : "2023.7.2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-44464"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pretix/pretix/commit/8583bfb7d97263e9e923ad5d7f123ca1cadc8f2e"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/pretix/pretix"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pretix/pretix/compare/v2023.7.1...v2023.7.2"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pretix/pretix/tags"
  }, {
    "type" : "WEB",
    "url" : "https://pretix.eu/about/de/blog/20230912-release-2023-7-2"
  }, {
    "type" : "WEB",
    "url" : "https://pretix.eu/about/en/ticketing"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-09-29T20:38:11Z",
    "nvd_published_at" : "2023-09-29T05:15:46Z"
  }
}