5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.966 High
EPSS
Percentile
99.6%
Debian Security Advisory DSA-5024-1 [email protected]
https://www.debian.org/security/ Markus Koschany
December 18, 2021 https://www.debian.org/security/faq
Package : apache-log4j2
CVE ID : CVE-2021-45105
Debian Bug : 1001891
It was found that Apache Log4j2, a Logging Framework for Java, did not protect
from uncontrolled recursion from self-referential lookups. When the logging
configuration uses a non-default Pattern Layout with a Context Lookup (for
example, $${ctx:loginId}), attackers with control over Thread Context Map (MDC)
input data can craft malicious input data that contains a recursive lookup,
resulting in a denial of service.
For the oldstable distribution (buster), this problem has been fixed
in version 2.17.0-1~deb10u1.
For the stable distribution (bullseye), this problem has been fixed in
version 2.17.0-1~deb11u1.
We recommend that you upgrade your apache-log4j2 packages.
For the detailed security status of apache-log4j2 please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/apache-log4j2
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: [email protected]
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 10 | all | liblog4j2-java | < 2.17.0-1~deb10u1 | liblog4j2-java_2.17.0-1~deb10u1_all.deb |
Debian | 11 | all | apache-log4j2 | < 2.17.0-1~deb11u1 | apache-log4j2_2.17.0-1~deb11u1_all.deb |
Debian | 10 | all | apache-log4j2 | < 2.17.0-1~deb10u1 | apache-log4j2_2.17.0-1~deb10u1_all.deb |
Debian | 9 | all | apache-log4j2 | < 2.12.3-0+deb9u1 | apache-log4j2_2.12.3-0+deb9u1_all.deb |
Debian | 9 | all | liblog4j2-java | < 2.12.3-0+deb9u1 | liblog4j2-java_2.12.3-0+deb9u1_all.deb |
Debian | 11 | all | liblog4j2-java | < 2.17.0-1~deb11u1 | liblog4j2-java_2.17.0-1~deb11u1_all.deb |
5.9 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:N/C:N/I:N/A:P
0.966 High
EPSS
Percentile
99.6%