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ubuntucveUbuntu.comUB:CVE-2020-11998
HistorySep 10, 2020 - 12:00 a.m.

CVE-2020-11998

2020-09-1000:00:00
ubuntu.com
ubuntu.com
7

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.006 Low

EPSS

Percentile

77.9%

A regression has been introduced in the commit preventing JMX re-bind. By
passing an empty environment map to RMIConnectorServer, instead of the map
that contains the authentication credentials, it leaves ActiveMQ open to
the following attack:
https://docs.oracle.com/javase/8/docs/technotes/guides/management/agent.html
“A remote client could create a javax.management.loading.MLet MBean and use
it to create new MBeans from arbitrary URLs, at least if there is no
security manager. In other words, a rogue remote client could make your
Java application execute arbitrary code.” Mitigation: Upgrade to Apache
ActiveMQ 5.15.13

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

0.006 Low

EPSS

Percentile

77.9%