CVE-2020-1938

apache · published 2020-02-24

Source record Collected from the National Vulnerability Database (NVD)

CISA Known Exploited Vulnerabilities

CISA lists this CVE as known exploited (added 2022-03-03).

CISA's name for it: Apache Tomcat Improper Privilege Management Vulnerability
CISA's description: Apache Tomcat treats Apache JServ Protocol (AJP) connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited.
Known ransomware campaign use, per CISA: Unknown

Description

Description by Apache Software Foundation via the CVE Program.

When using the Apache JServ Protocol (AJP), care must be taken when trusting incoming connections to Apache Tomcat. Tomcat treats AJP connections as having higher trust than, for example, a similar HTTP connection. If such connections are available to an attacker, they can be exploited in ways that may be surprising. In Apache Tomcat 9.0.0.M1 to 9.0.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99, Tomcat shipped with an AJP Connector enabled by default that listened on all configured IP addresses. It was expected (and recommended in the security guide) that this Connector would be disabled if not required. This vulnerability report identified a mechanism that allowed: - returning arbitrary files from anywhere in the web application - processing any file in the web application as a JSP Further, if the web application allowed file upload and stored those files within the web application (or the attacker was able to control the content of the web application by some other means) then this, along with the ability to process a file as a JSP, made remote code execution possible. It is important to note that mitigation is only required if an AJP port is accessible to untrusted users. Users wishing to take a defence-in-depth approach and block the vector that permits returning arbitrary files and execution as JSP may upgrade to Apache Tomcat 9.0.31, 8.5.51 or 7.0.100 or later. A number of changes were made to the default AJP Connector configuration in 9.0.31 to harden the default configuration. It is likely that users upgrading to 9.0.31, 8.5.51 or 7.0.100 or later will need to make small changes to their configurations.

Filed by Apache Software Foundation; not a statement by apache.

Status at the source

NVD status: Analyzed

Affected products, as the source lists them

Vendor	Product	Versions
Apache	Apache Tomcat	Apache Tomcat 9.0.0.M1 to 9.0.0.30: affected 8.5.0 to 8.5.50: affected 7.0.0 to 7.0.99: affected

Products named in NVD's CPE match criteria (21)

cpe:2.3:a:apache:geode:1.12.0:*:*:*:*:*:*:*
cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:a:oracle:agile_engineering_data_management:6.2.1.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:agile_product_lifecycle_management:9.3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_element_manager:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_instant_messaging_server:10.0.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:health_sciences_empirica_inspections:1.0.1.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:health_sciences_empirica_signal:7.3.3:*:*:*:*:*:*:*
cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:instantis_enterprisetrack:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:siebel_ui_framework:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:transportation_management:6.3.7:*:*:*:*:*:*:*
cpe:2.3:a:oracle:workload_manager:12.2.0.1:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
cpe:2.3:a:blackberry:good_control:*:*:*:*:*:*:*:*
cpe:2.3:a:blackberry:workspaces_server:7.0.1:*:*:*:*:*:*:*
cpe:2.3:a:netapp:data_availability_services:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_system_manager:*:*:*:*:*:*:*:*

DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.

Scores, as their sources published them

CVSS 3.1: 9.8 CRITICAL — as published by NIST (Primary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 3.1: 9.8 CRITICAL — as published by CISA-ADP (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HIGH — as published by NIST (Primary)
AV:N/AC:L/Au:N/C:P/I:P/A:P
SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: active · Automatable: yes · Technical impact: total

DeSpy does not score records. These are the sources' own values.

Weaknesses

NVD-CWE-Other

Sources

References the source lists

The source lists more references.

Source dates: published 2020-02-24, last changed 2026-08-25. DeSpy's copy of this version is dated 2026-09-28.

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