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CVE-2023-41039

RestrictedPython is a restricted execution environment for Python to run untrusted code. 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. This issue has been addressed in commit `4134aedcff1` which has been included in the 5.4 and 6.2 releases. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Published

2023-08-30T18:15:09.880

Last Modified

2024-11-21T08:20:26.090

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 8.3 (HIGH)

Weaknesses

Type: Primary
CWE-74

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	zope	restrictedpython	< 5.4	Yes
Application	zope	restrictedpython	< 6.2	Yes

References

https://github.com/zopefoundation/RestrictedPython/commit/4134aedcff17c977da7717693ed89ce56d54c120 Patch ([email protected])
https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-xjw2-6jm9-rf67 Vendor Advisory ([email protected])
https://github.com/zopefoundation/RestrictedPython/commit/4134aedcff17c977da7717693ed89ce56d54c120 Patch (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/zopefoundation/RestrictedPython/security/advisories/GHSA-xjw2-6jm9-rf67 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)