SUSE update for tomcat

Published: 2021-03-30

Risk	High
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2020-9484 CVE-2021-24122 CVE-2021-25122 CVE-2021-25329
CWE-ID	CWE-502 CWE-200 CWE-399
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise High Performance Computing Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system tomcat-webapps Operating systems & Components / Operating system package or component tomcat-servlet-4_0-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-el-3_0-api 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 4 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 for SAP: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS

SUSE Linux Enterprise Server: 15-LTSS

tomcat-webapps: before 9.0.36-3.79.1

tomcat-servlet-4_0-api: before 9.0.36-3.79.1

tomcat-lib: before 9.0.36-3.79.1

tomcat-jsp-2_3-api: before 9.0.36-3.79.1

tomcat-el-3_0-api: before 9.0.36-3.79.1

tomcat-admin-webapps: before 9.0.36-3.79.1

tomcat: before 9.0.36-3.79.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20210989-1/

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) Information disclosure

EUVDB-ID: #VU49570

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-24122

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to JSP source code disclosure in some configurations, when serving resources from a network location using the NTFS file system. The root cause was the unexpected behaviour of the JRE API File.getCanonicalPath() which in turn was caused by the inconsistent behaviour of the Windows API (FindFirstFileW) in some circumstances.A remote attacker can send a specially crafted request to the application and view the JSP source code.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS

SUSE Linux Enterprise Server: 15-LTSS

tomcat-webapps: before 9.0.36-3.79.1

tomcat-servlet-4_0-api: before 9.0.36-3.79.1

tomcat-lib: before 9.0.36-3.79.1

tomcat-jsp-2_3-api: before 9.0.36-3.79.1

tomcat-el-3_0-api: before 9.0.36-3.79.1

tomcat-admin-webapps: before 9.0.36-3.79.1

tomcat: before 9.0.36-3.79.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20210989-1/

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.

3) Resource management error

EUVDB-ID: #VU51014

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-25122

CWE-ID: CWE-399 - Resource Management Errors

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to improper management of internal resources within the application when processing new h2c connection requests. A remote attacker can send specially crafted requests to the server and obtain contents of HTTP responses, served to other users.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS

SUSE Linux Enterprise Server: 15-LTSS

tomcat-webapps: before 9.0.36-3.79.1

tomcat-servlet-4_0-api: before 9.0.36-3.79.1

tomcat-lib: before 9.0.36-3.79.1

tomcat-jsp-2_3-api: before 9.0.36-3.79.1

tomcat-el-3_0-api: before 9.0.36-3.79.1

tomcat-admin-webapps: before 9.0.36-3.79.1

tomcat: before 9.0.36-3.79.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20210989-1/

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.

4) 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

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

Exploit availability: No

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. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Note, the vulnerability exists due to incomplete fix for #VU28158 and requires a certain specific configuration.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server for SAP: 15-SP3

SUSE Linux Enterprise High Performance Computing: 15-ESPOS - 15-LTSS

SUSE Linux Enterprise Server: 15-LTSS

tomcat-webapps: before 9.0.36-3.79.1

tomcat-servlet-4_0-api: before 9.0.36-3.79.1

tomcat-lib: before 9.0.36-3.79.1

tomcat-jsp-2_3-api: before 9.0.36-3.79.1

tomcat-el-3_0-api: before 9.0.36-3.79.1

tomcat-admin-webapps: before 9.0.36-3.79.1

tomcat: before 9.0.36-3.79.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20210989-1/

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.