GHSA-8xv7-89vj-q48c

Suggest an improvement
Source
https://github.com/advisories/GHSA-8xv7-89vj-q48c
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/09/GHSA-8xv7-89vj-q48c/GHSA-8xv7-89vj-q48c.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-8xv7-89vj-q48c
Aliases
Published
2023-09-07T12:56:39Z
Modified
2024-02-16T08:22:33.728033Z
Severity
  • 6.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Information disclosure in AccessControl
Details

Impact

Python's "format" functionality allows someone controlling the format string to "read" objects accessible (recursively) via attribute access and subscription from accessible objects. Those attribute accesses and subscriptions use Python's full blown getattr and getitem, not the policy restricted AccessControl variants _getattr_ and _getitem_. This can lead to critical information disclosure.

AccessControl already provides a safe variant for str.format and denies access to string.Formatter. However, str.format_map is still unsafe.

Affected are all users who allow untrusted users to create AccessControl controlled Python code and execute it.

Patches

A fix will be introduced in the versions 4.4, 5.8 and 6.2.

Workarounds

There are no workarounds.

References

https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-xjw2-6jm9-rf67 describes the corresponding problem for RestrictedPython.

References

Affected packages

PyPI / accesscontrol

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.4

Affected versions

2.*

2.13.0
2.13.1
2.13.2
2.13.3
2.13.4
2.13.5
2.13.6
2.13.7
2.13.8
2.13.9
2.13.10
2.13.11
2.13.12
2.13.13
2.13.14
2.13.15
2.13.16

3.*

3.0
3.0.1
3.0.2
3.0.3
3.0.4
3.0.5
3.0.6
3.0.7
3.0.8
3.0.9
3.0.10
3.0.11
3.0.12
3.0.13
3.0.14

4.*

4.0a1
4.0a2
4.0a3
4.0a4
4.0a5
4.0a6
4.0a7
4.0b1
4.0b2
4.0b3
4.0b4
4.0b5
4.0b6
4.0b7
4.0
4.1
4.2
4.3

PyPI / zope

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.8.9

Affected versions

4.*

4.0b1
4.0b2
4.0b3
4.0b4
4.0b5
4.0b6
4.0b7
4.0b8
4.0b9
4.0b10
4.0
4.1
4.1.1
4.1.2
4.1.3
4.2
4.2.1
4.3
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.5
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.6
4.6.1
4.6.2
4.6.3
4.7
4.8
4.8.1
4.8.2
4.8.3
4.8.4
4.8.5
4.8.6
4.8.7
4.8.8

PyPI / accesscontrol

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.0
Fixed
5.8

Affected versions

5.*

5.0
5.1
5.2
5.3
5.3.1
5.4
5.5
5.6
5.7

PyPI / accesscontrol

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
6.0
Fixed
6.2

Affected versions

6.*

6.0
6.1

Ecosystem specific

{
    "affected_functions": [
        "https://github.com/zopefoundation/AccessControl/commit/6bc32692e0d4b8d5cf64eae3d19de987c7375bc9"
    ]
}

PyPI / zope

Package

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.0.0
Fixed
5.8.4

Affected versions

5.*

5.0
5.1
5.1.1
5.1.2
5.2
5.2.1
5.3
5.4
5.5
5.5.1
5.5.2
5.6
5.7
5.7.1
5.7.2
5.7.3
5.8
5.8.1
5.8.2
5.8.3