GHSA-xjw2-6jm9-rf67

Source

https://github.com/advisories/GHSA-xjw2-6jm9-rf67

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/08/GHSA-xjw2-6jm9-rf67/GHSA-xjw2-6jm9-rf67.json

JSON Data

https://api.test.osv.dev/v1/vulns/GHSA-xjw2-6jm9-rf67

Aliases

Published

2023-08-30T20:47:58Z

Modified

2023-11-07T05:21:12.633861Z

Severity

8.3 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:L CVSS Calculator

Summary

Sandbox escape via various forms of "format".

Details

Impact

Python's "format" functionality allows someone controlling the format string to "read" all objects accessible through recursive attribute lookup and subscription from objects he can access. This can lead to critical information disclosure. With RestrictedPython, the format functionality is available via the format and format_map methods of str (and unicode) (accessed either via the class or its instances) and via string.Formatter. All known versions of RestrictedPython are vulnerable.

Patches

The issue will be fixed in 5.4 and 6.2.

Workarounds

There are no workarounds to fix the issue without upgrading.

References

https://docs.python.org/3/library/stdtypes.html#str.format_map
http://lucumr.pocoo.org/2016/12/29/careful-with-str-format/
https://www.exploit-db.com/exploits/51580

For more information

If you have any questions or comments about this advisory:

Open an issue in the RestrictedPython issue tracker
Email us at security@plone.org

Credits

Thanks for analysing and reporting the go to:

Abhishek Govindarasu
Ankush Menat
Ward Theunisse

Database specific

{
    "nvd_published_at": "2023-08-30T18:15:09Z",
    "cwe_ids": [
        "CWE-74"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2023-08-30T20:47:58Z"
}

References

Affected packages

PyPI / restrictedpython

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

5.4

Affected versions

3.*

3.4.2

3.4.3

3.5.0

3.5.1

3.5.2

3.6.0a1

3.6.0

4.*

4.0a1

4.0a2

4.0a3

4.0b1

4.0b2

4.0b3

4.0b4

4.0b5

4.0b6

4.0b7

4.0b8

4.0

5.*

5.0

5.1

5.2a1.dev0

5.2

5.3a1.dev0

5.3

Database specific

{
    "last_known_affected_version_range": "<= 5.3"
}

PyPI / restrictedpython

Package

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

Affected ranges

Type: ECOSYSTEM
Events: Introduced

6.0

Fixed

6.2

Affected versions

6.*

6.0

6.1

Database specific

{
    "last_known_affected_version_range": "<= 6.1"
}