CVE-2023-22912 Information

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Description

An issue was discovered in MediaWiki before 1.35.9 1.36.x through 1.38.x before 1.38.5 and 1.39.x before 1.39.1. CheckUser TokenManager insecurely uses AES-CTR encryption with a repeated (aka re-used) nonce allowing an adversary to decrypt.

Reference

https://phabricator.wikimedia.org/T315123