GHSA-6757-jp84-gxfx

Source

https://github.com/advisories/GHSA-6757-jp84-gxfx

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/04/GHSA-6757-jp84-gxfx/GHSA-6757-jp84-gxfx.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-6757-jp84-gxfx

Aliases

Published

2021-04-20T16:14:24Z

Modified

2024-02-14T05:33:05.900311Z

Severity

9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

Improper Input Validation in PyYAML

Details

A vulnerability was discovered in the PyYAML library in versions before 5.3.1, where it is susceptible to arbitrary code execution when it processes untrusted YAML files through the full_load method or with the FullLoader loader. Applications that use the library to process untrusted input may be vulnerable to this flaw. An attacker could use this flaw to execute arbitrary code on the system by abusing the python/object/new constructor.

References

Affected packages

PyPI / pyyaml

Package

Name: pyyaml; View open source insights on deps.dev
Purl: pkg:pypi/pyyaml

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.3.1

Affected versions

3.*

3.01

3.02

3.03

3.04

3.05

3.06

3.07

3.08

3.09

3.10

3.11

3.12

3.13b1

3.13rc1

3.13

4.*

4.2b1

4.2b2

4.2b4

5.*

5.1b1

5.1b3

5.1b5

5.1b7

5.1

5.1.1

5.1.2

5.2b1

5.2

5.3b1

5.3

Ecosystem specific

{
    "affected_functions": [
        "yaml.load",
        "yaml.full_load",
        "yaml.FullLoader"
    ]
}