Apache Oozie XML Construction User Impersonation Vulnerability [CVE-2018-11799]
CVE Number – CVE-2018-11799
A vulnerability in Apache Oozie could allow an authenticated, remote attacker to conduct a user impersonation attack on a targeted system.The vulnerability is due to improper access controls within the affected software. An attacker could exploit this vulnerability by constructing an XML that results in workflows running in another user’s name. A successful exploit could allow the attacker to impersonate a targeted user and conduct additional attacks.Apache has confirmed the vulnerability and released software updates.
Analysis
- To exploit this vulnerability, the attacker must have user access to the targeted system. This requirement may reduce the likelihood of a successful exploit.
Safeguards
- Administrators are advised to apply the appropriate updates.Administrators are advised to allow only trusted users to have network access.Administrators are advised to run both firewall and antivirus applications to minimize the potential of inbound and outbound threats.Administrators may consider using IP-based access control lists (ACLs) to allow only trusted systems to access the affected systems.Administrators can help protect affected systems from external attacks by using a solid firewall strategy.Administrators are advised to monitor affected systems.
Vendor Announcements
- Apache has released a security advisory at the following link: CVE-2018-11799: Apache Oozie security vulnerability
Fixed Software
- Apache has released a software update at the following link: Apache Oozie 5.1.0
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.