7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
0.0005 Low
EPSS
Percentile
15.0%
A privilege escalation flaw was found in Tomcat when the JMX Remote Lifecycle Listener was enabled. A local attacker without access to the Tomcat process or configuration files could be able to manipulate the RMI registry to perform a man-in-the-middle attack. The attacker could then capture user names and passwords used to access the JMX interface and gain complete control over the Tomcat instance.
Disable JMX Remote if monitoring is only needed locally and there is no need to monitor Tomcat remotely. If JMX Remote is required and cannot be disabled, then use the built-in remote JMX facilities provided by the JVM.
Please note that JMX Remote Lifecycle Listener is now deprecated and may be removed from both Tomcat 7 [1] and Tomcat 9 [2] after 2020-12-31.
[1] <https://tomcat.apache.org/tomcat-7.0-doc/config/listeners.html#Deprecated_Implementations>
[2] <https://tomcat.apache.org/tomcat-9.0-doc/config/listeners.html#Deprecated_Implementations>
mail-archives.apache.org/mod_mbox/tomcat-users/201912.mbox/%[email protected]%3E
tomcat.apache.org/security-8.html#Fixed_in_Apache_Tomcat_8.5.49
tomcat.apache.org/security-9.html#Fixed_in_Apache_Tomcat_9.0.29
bugzilla.redhat.com/show_bug.cgi?id=1785699
nvd.nist.gov/vuln/detail/CVE-2019-12418
tomcat.apache.org/security-7.html#Fixed_in_Apache_Tomcat_7.0.99
www.cve.org/CVERecord?id=CVE-2019-12418
7 High
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
4.4 Medium
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:L/AC:M/Au:N/C:P/I:P/A:P
0.0005 Low
EPSS
Percentile
15.0%