SB2021021828 - Ubuntu update for libjackson-json-java

Description

This security bulletin contains information about 3 secuirty vulnerabilities.

1) Remote code execution (CVE-ID: CVE-2017-15095)

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

The vulnerability exists in the jackson-databind development library due to improper implementation of blacklists for input handled by the ObjectMapper object readValue method. A remote unauthenticated attacker can send a malicious input and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

2) Deserialization of untrusted data (CVE-ID: CVE-2017-7525)

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

The weakness exists due to a deserialization flaw in the jackson-databind component. A remote attacker can send a specially crafted input to the readValue method of the ObjectMapper and execute arbitrary code with privileges of the target service.

Successful exploitation of the vulnerability may result in system compromise.

3) XML External Entity injection (CVE-ID: CVE-2019-10172)

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

The vulnerability exists due to insufficient validation of user-supplied XML input. A remote attacker can pass a specially crafted XML code to the affected application and view contents of arbitrary files on the system or initiate requests to external systems.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary file on the server or perform network scanning of internal and external infrastructure.

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-4741-1