SUSE update for tomcat

Published: 2021-04-29

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-9484 CVE-2021-25329
CWE-ID	CWE-502
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system HPE Helion Openstack Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system tomcat-webapps Operating systems & Components / Operating system package or component tomcat-servlet-3_1-api Operating systems & Components / Operating system package or component tomcat-lib Operating systems & Components / Operating system package or component tomcat-jsp-2_3-api Operating systems & Components / Operating system package or component tomcat-javadoc Operating systems & Components / Operating system package or component tomcat-el-3_0-api Operating systems & Components / Operating system package or component tomcat-docs-webapp Operating systems & Components / Operating system package or component tomcat-admin-webapps Operating systems & Components / Operating system package or component tomcat Operating systems & Components / Operating system package or component
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Deserialization of Untrusted Data

EUVDB-ID: #VU28158

Risk: High

CVSSv3.1: 7.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2020-9484

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data in uploaded files names. A remote attacker can pass specially crafted file name to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that the server is configured to use PersistenceManager with a FileStore and the attacker knows relative file path from storage location.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server: 12-SP2-BCL - 12-SP3-LTSS

SUSE OpenStack Cloud Crowbar: 8

SUSE Linux Enterprise Server for SAP: 12-SP3

HPE Helion Openstack: 8

SUSE OpenStack Cloud: 8

tomcat-webapps: before 8.0.53-29.46.1

tomcat-servlet-3_1-api: before 8.0.53-29.46.1

tomcat-lib: before 8.0.53-29.46.1

tomcat-jsp-2_3-api: before 8.0.53-29.46.1

tomcat-javadoc: before 8.0.53-29.46.1

tomcat-el-3_0-api: before 8.0.53-29.46.1

tomcat-docs-webapp: before 8.0.53-29.46.1

tomcat-admin-webapps: before 8.0.53-29.46.1

tomcat: before 8.0.53-29.46.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20211431-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) Deserialization of Untrusted Data

EUVDB-ID: #VU51012

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25329