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Debian: CVE-2021-45046: apache-log4j2 -- security update

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Debian: CVE-2021-45046: apache-log4j2 -- security update

Severity
5
CVSS
(AV:N/AC:H/Au:N/C:P/I:P/A:P)
Published
12/14/2021
Created
12/18/2021
Added
12/17/2021
Modified
05/02/2023

Description

It was found that the fix to address CVE-2021-44228 in Apache Log4j 2.15.0 was incomplete in certain non-default configurations. This could allows attackers with control over Thread Context Map (MDC) input data when the logging configuration uses a non-default Pattern Layout with either a Context Lookup (for example, $${ctx:loginId}) or a Thread Context Map pattern (%X, %mdc, or %MDC) to craft malicious input data using a JNDI Lookup pattern resulting in an information leak and remote code execution in some environments and local code execution in all environments. Log4j 2.16.0 (Java 8) and 2.12.2 (Java 7) fix this issue by removing support for message lookup patterns and disabling JNDI functionality by default.

Solution(s)

  • debian-upgrade-apache-log4j2

References

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