In PHP versions 8.0.* before 8.0.30, 8.1.* before 8.1.22, and 8.2.* before 8.2.8 various XML functions rely on libxml global state to track configuration variables, like whether external entities are loaded. This state is assumed to be unchanged unless the user explicitly changes it by calling appropriate function. However, since the state is process-global, other modules - such as ImageMagick - may also use this library within the same process, and change that global state for their internal purposes, and leave it in a state where external entities loading is enabled. This can lead to the situation where external XML is parsed with external entities loaded, which can lead to disclosure of any local files accessible to PHP. This vulnerable state may persist in the same process across many requests, until the process is shut down.
Metrics
Affected Vendors & Products
References
History
No history.
MITRE
Status: PUBLISHED
Assigner: php
Published: 2023-08-11T05:42:25.771Z
Updated: 2024-08-02T07:08:50.269Z
Reserved: 2023-07-21T16:16:57.133Z
Link: CVE-2023-3823
Vulnrichment
No data.
NVD
Status : Modified
Published: 2023-08-11T06:15:09.283
Modified: 2024-11-21T08:18:08.950
Link: CVE-2023-3823
Redhat