UBUNTU-CVE-2020-11998 (CVE-2020-11998)
Vulnerability from osv_ubuntu – Published: 2020-09-10 19:15 – Updated: 2026-05-20 14:52 – Source website
VLAI
Details
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
Severity
9.8 (Critical)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.13.2+dfsg-2ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.13.2+dfsg-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.6.0+dfsg1-4+deb8u1ubuntu1",
"5.6.0+dfsg1-5",
"5.13.2+dfsg-2",
"5.13.2+dfsg-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.15.8-2~18.04.1~esm1"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.15.8-2~18.04.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.15.8-2~18.04.1~esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.14.5-3",
"5.15.2-2",
"5.15.3-2",
"5.15.8-2~18.04",
"5.15.8-2~18.04.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.15.11-1ubuntu0.1~esm1"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.15.11-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.15.11-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.15.10-1",
"5.15.11-1",
"5.15.11-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.16.1-1ubuntu0.1"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.16.1-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.16.1-1ubuntu0.1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.16.1-1",
"5.16.1-1ubuntu0.1~esm1",
"5.16.1-1ubuntu0.1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.17.6+dfsg-1"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.17.6+dfsg-1"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-1?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.17.2+dfsg-2",
"5.17.6+dfsg-1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.17.6+dfsg-2"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.17.6+dfsg-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.17.6+dfsg-1",
"5.17.6+dfsg-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "activemq",
"binary_version": "5.17.6+dfsg-2"
},
{
"binary_name": "libactivemq-java",
"binary_version": "5.17.6+dfsg-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "activemq",
"purl": "pkg:deb/ubuntu/activemq@5.17.6+dfsg-2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.17.6+dfsg-2"
]
}
],
"aliases": [],
"details": "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",
"id": "UBUNTU-CVE-2020-11998",
"modified": "2026-05-20T14:52:06Z",
"published": "2020-09-10T19:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-11998"
},
{
"type": "REPORT",
"url": "http://activemq.apache.org/security-advisories.data/CVE-2020-11998-announcement.txt"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-11998"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-11998"
]
}
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Sightings
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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