SB2021042159 - SUSE update for tomcat6

Description

This security bulletin contains information about 4 secuirty vulnerabilities.

1) Improper input validation (CVE-ID: CVE-2017-12617)

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

The weakness exists due to insufficient validation of user-supplied input when running with HTTP PUTs enabled. A remote attacker can send a specially crafted request to upload a JSP file to the server and execute arbitrary code on the system.

Successful exploitation of the vulnerability may result in full system compromise.

2) Deserialization of Untrusted Data (CVE-ID: CVE-2020-9484)

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.

3) Information disclosure (CVE-ID: CVE-2021-24122)

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.

4) Deserialization of Untrusted Data (CVE-ID: CVE-2021-25329)

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.

Remediation

Install update from vendor's website.

References

• https://www.suse.com/support/update/announcement/2021/suse-su-202114705-1/