Multiple critical security vulnerabilities have been identified in Junos OS, a network operating system used in security and network devices developed by Juniper Networks. The vulnerabilities allow threat actors to perform unauthorized file access, cross-site scripting (XSS), and directory traversal attacks.
Some of the detected security vulnerabilities are as follows;
- The security vulnerability, tracked as CVE-2022-22241, is due to incorrect login validation affecting the J-Web component of Juniper Networks Junos OS. As a result, an unauthenticated threat actor that successfully exploits the vulnerability can gain access to data through a specially crafted POST request without proper authorization.
- The vulnerability, tracked as CVE-2022-22246, is a PHP Local File Inclusion (LFI) vulnerability that affects the J-Web component of Juniper Networks Junos OS and could allow a low-privileged authenticated threat actor to execute a malicious PHP file on the vulnerable system.
- The vulnerability tracked as CVE-2022-22242 is a Cross-Site Scripting (XSS) vulnerability that affects the J-Web component of Juniper Networks Junos OS and could allow an unauthenticated threat actor to run malicious scripts in the user’s browser in the context of a J-Web session.
- The vulnerability tracked as CVE-2022-22244 is an XPath Injection vulnerability that affects the J-Web component of Juniper Networks Junos OS. An unauthenticated threat actor can exploit the vulnerability through a specially crafted POST request.
These vulnerabilities, which affect all versions of the Junos operating system, are critically rated as high and have been fixed with the updates released by Juniper Networks. In this context, in order not to be the target of attacks that can be carried out using vulnerabilities, it is recommended that vulnerable Junos OS users upgrade immediately to released updates, while as a workaround, disable J-Web or restrict access to trusted hosts only.