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NewStart CGSL CORE 5.05 / MAIN 5.05 : tomcat Vulnerability (NS-SA-2020-0085)
critical Nessus Plugin ID 143968
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Synopsis
The remote machine is affected by a vulnerability.Description
The remote NewStart CGSL host, running version CORE 5.05 / MAIN 5.05, has tomcat packages installed that are affected by a vulnerability:- 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.
(CVE-2020-1938)
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade the vulnerable CGSL tomcat packages. Note that updated packages may not be available yet. Please contact ZTE for more information.See Also
Plugin Details
Severity: Critical
ID: 143968
File Name: newstart_cgsl_NS-SA-2020-0085_tomcat.nasl
Version: 1.7
Type: local
Published: 12/9/2020
Updated: 1/11/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.0
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2020-1938
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 9.4
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 12/8/2020
Vulnerability Publication Date: 2/24/2020
CISA Known Exploited Vulnerability Due Dates: 3/17/2022
Reference Information
CVE: CVE-2020-1938