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%
Package : apache-log4j2
Version : 2.12.3-0+deb9u1
CVE ID : CVE-2020-9488 CVE-2021-45105
Debian Bug : 959450 1001891
Several security vulnerabilities were found in Apache Log4j2, a Logging
Framework for Java, which could lead to a denial of service or information
disclosure.
CVE-2020-9488
Improper validation of certificate with host mismatch in Apache Log4j SMTP
appender. This could allow an SMTPS connection to be intercepted by a
man-in-the-middle attack which could leak any log messages sent through
that appender.
CVE-2021-45105
Apache Log4j2 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.
For Debian 9 stretch, these problems have been fixed in version
2.12.3-0+deb9u1.
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 LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
Attachment:
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OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 9 | all | liblog4j2-java | < 2.12.3-0+deb9u1 | liblog4j2-java_2.12.3-0+deb9u1_all.deb |
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 | 11 | all | liblog4j2-java | < 2.17.0-1~deb11u1 | liblog4j2-java_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 |
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%