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Ubuntu: (Multiple Advisories) (CVE-2021-45105): Apache Log4j 2 vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2021-45105): Apache Log4j 2 vulnerability

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:P)
Published
12/18/2021
Created
12/28/2021
Added
12/20/2021
Modified
05/01/2023

Description

Apache Log4j2 versions 2.0-alpha1 through 2.16.0 (excluding 2.12.3 and 2.3.1) did not protect from uncontrolled recursion from self-referential lookups. This allows an attacker with control over Thread Context Map data to cause a denial of service when a crafted string is interpreted. This issue was fixed in Log4j 2.17.0, 2.12.3, and 2.3.1.

Solution(s)

  • ubuntu-upgrade-liblog4j2-java

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