AccessControl provides a general security framework for use in Zope. 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. A fix has been introduced in versions 4.4, 5.8 and 6.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.
History

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-09-06T17:58:10.510Z

Updated: 2024-08-02T18:46:11.727Z

Reserved: 2023-08-22T16:57:23.933Z

Link: CVE-2023-41050

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-09-06T18:15:08.847

Modified: 2023-09-13T02:47:08.580

Link: CVE-2023-41050

cve-icon Redhat

No data.