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CVE-2021-45046 — Apache Log4j2 Deserialization of Untrusted Data Vulnerability

Known ransomware use CISA KEV listed Added May 1, 2023 Remediate by May 22, 2023

Description

Apache Log4j2 contains a deserialization of untrusted data vulnerability due to the incomplete fix of CVE-2021-44228, where the Thread Context Lookup Pattern is vulnerable to remote code execution in certain non-default configurations.

Required action

Apply updates per vendor instructions.

Notes

https://logging.apache.org/log4j/2.x/security.html; https://nvd.nist.gov/vuln/detail/CVE-2021-45046

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