A vulnerability in the spring-messaging module of the Spring Framework could allow an unauthenticated, remote attacker to conduct a regular expression denial of service (ReDoS) attack on a targeted system.
The vulnerability is due to improper processing of messages by applications using the affected software. Applications using the affected software expose Simple Text Orientated Messaging Protocol (STOMP) over WebSocket endpoints with a simple, in-memory STOMP broker through the spring-messaging module. An attacker could exploit this vulnerability by sending a message that submits malicious input to a targeted system. An exploit could allow the attacker to conduct a ReDoS attack.
Pivotal Software has confirmed the vulnerability and released software updates.
Certain requirements must be met by an application using the affected software to be vulnerable. As a result, a successful exploit would be difficult for an attacker to achieve without target-specific reconnaissance prior to an exploit attempt.
Administrators may consider using Spring Security, which provides authentication and authorization for messages. The use of Spring Security could limit this vulnerability only to authorized users.
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.
Pivotal Software has released a vulnerability report at the following link: CVE-2018-1257
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