High-Severity Flaws in Juniper Junos OS Affect Enterprise Networking Devices

Multiple large-severity security flaws have been disclosed as affecting Juniper Networks products, some of which could be exploited to reach code execution.

Chief amid them is a remote pre-authenticated PHP archive file deserialization vulnerability (CVE-2022-22241, CVSS score: 8.1) in the J-Web part of Junos OS, in accordance to Octagon Networks researcher Paulos Yibelo.

“This vulnerability can be exploited by an unauthenticated remote attacker to get remote phar files deserialized, main to arbitrary file create, which prospects to a remote code execution (RCE),” Yibelo claimed in a report shared with The Hacker News.

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Also determined are 5 other issues, which are mentioned as abide by –

• CVE-2022-22242 (CVSS rating: 6.1) – A pre-authenticated mirrored XSS on the error site (“error.php”), permitting a distant adversary to siphon Junos OS admin session and chained with other flaws that call for authentication.

• CVE-2022-22243 (CVSS score: 4.3) & CVE-2022-22244 (CVSS rating: 5.3) – Two XPATH injection flaws that exploited by a distant authenticated attacker to steal and manipulate Junos OS admin sessions

• CVE-2022-22245 (CVSS score: 4.3) – A route traversal flaw that could allow a remote authenticated attacker to upload PHP information to any arbitrary spot, in a way very similar to that of the recently disclosed RARlab UnRAR flaw (CVE-2022-30333), and

• CVE-2022-22246 (CVSS rating: 7.5) – A community file inclusion vulnerability that could be weaponized to operate untrusted PHP code.

“This [CVE-2022-22246] enables an attacker the means to include any PHP file saved on the server,” Yibelo noted. “If this vulnerability is exploited along with the file upload vulnerability, it can guide to distant code execution.”

People of Juniper Networks firewalls, routers, and switches are advisable to apply the most up-to-date program patch offered for Junos OS to mitigate aforementioned threats.

“Just one or more of these issues could guide to unauthorized community file accessibility, cross-web page scripting attacks, route injection and traversal, or neighborhood file inclusion,” Juniper Networks disclosed in an advisory unveiled on October 12, 2022.

The issues have been addressed in Junos OS variations 19.1R3-S9, 19.2R3-S6, 19.3R3-S7, 19.4R3-S9, 20.1R3-S5, 20.2R3-S5, 20.3R3-S5, 20.4R3-S4, 21.1R3-S2, 21.3R3, 21.4R3, 22.1R2, 22.2R1, and later.

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