SUSE update for tomcat

Published: 2021-11-03

Risk	Medium
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2021-30640 CVE-2021-33037 CVE-2021-41079
CWE-ID	CWE-287 CWE-444 CWE-835
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	SUSE OpenStack Cloud Crowbar Operating systems & Components / Operating system SUSE Linux Enterprise Server for SAP Operating systems & Components / Operating system SUSE Linux Enterprise Server Operating systems & Components / Operating system SUSE OpenStack Cloud Operating systems & Components / Operating system javapackages-tools Operating systems & Components / Operating system package or component 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-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 3 vulnerabilities.

1) Improper Authentication

EUVDB-ID: #VU55417

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-30640

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in the JNDI Realm when processing authentication requests. A remote attacker can authenticate using variations of a valid user name and bypass some of the protection provided by the LockOut Realm.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 9

SUSE Linux Enterprise Server for SAP: 12-SP4

SUSE Linux Enterprise Server: 12-SP4-LTSS - 12-SP5

SUSE OpenStack Cloud: 9

javapackages-tools: before 2.0.1-13.1

tomcat-webapps: before 9.0.36-3.71.1

tomcat-servlet-4_0-api: before 9.0.36-3.71.1

tomcat-lib: before 9.0.36-3.71.1

tomcat-jsp-2_3-api: before 9.0.36-3.71.1

tomcat-javadoc: before 9.0.36-3.71.1

tomcat-el-3_0-api: before 9.0.36-3.71.1

tomcat-docs-webapp: before 9.0.36-3.71.1

tomcat-admin-webapps: before 9.0.36-3.71.1

tomcat: before 9.0.36-3.71.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213602-1/

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.

2) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU55423

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33037

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to preform HTTP request smuggling attacks.

The vulnerability exists due to improper validation of HTTP requests, related to processing of transfer encoding headers. A remote attacker can send a specially crafted HTTP request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison HTTP cache and perform phishing attacks.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 9

SUSE Linux Enterprise Server for SAP: 12-SP4

SUSE Linux Enterprise Server: 12-SP4-LTSS - 12-SP5

SUSE OpenStack Cloud: 9

javapackages-tools: before 2.0.1-13.1

tomcat-webapps: before 9.0.36-3.71.1

tomcat-servlet-4_0-api: before 9.0.36-3.71.1

tomcat-lib: before 9.0.36-3.71.1

tomcat-jsp-2_3-api: before 9.0.36-3.71.1

tomcat-javadoc: before 9.0.36-3.71.1

tomcat-el-3_0-api: before 9.0.36-3.71.1

tomcat-docs-webapp: before 9.0.36-3.71.1

tomcat-admin-webapps: before 9.0.36-3.71.1

tomcat: before 9.0.36-3.71.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213602-1/

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) Infinite loop

EUVDB-ID: #VU56634

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41079

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when processing certain TLS packets. A remote attacker can send a specially crafted packet to the application, consume all available system resources and cause denial of service conditions.

Successful exploitation of vulnerability requires that Apache Tomcat is configured to use NIO+OpenSSL or NIO2+OpenSSL for TLS.

Mitigation

Update the affected package tomcat to the latest version.

Vulnerable software versions

SUSE OpenStack Cloud Crowbar: 9

SUSE Linux Enterprise Server for SAP: 12-SP4

SUSE Linux Enterprise Server: 12-SP4-LTSS - 12-SP5

SUSE OpenStack Cloud: 9

javapackages-tools: before 2.0.1-13.1

tomcat-webapps: before 9.0.36-3.71.1

tomcat-servlet-4_0-api: before 9.0.36-3.71.1

tomcat-lib: before 9.0.36-3.71.1

tomcat-jsp-2_3-api: before 9.0.36-3.71.1

tomcat-javadoc: before 9.0.36-3.71.1

tomcat-el-3_0-api: before 9.0.36-3.71.1

tomcat-docs-webapp: before 9.0.36-3.71.1

tomcat-admin-webapps: before 9.0.36-3.71.1

tomcat: before 9.0.36-3.71.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213602-1/

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.