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Juniper Networks Patches Critical Vulnerabilities in Firewalls

Juniper Networks this week informed customers that it has patched many vulnerabilities in its products, mostly ones that can be exploited for denial-of-service (DoS) attacks.

Juniper Networks this week informed customers that it has patched many vulnerabilities in its products, mostly ones that can be exploited for denial-of-service (DoS) attacks.

Over a dozen advisories have been published by the company to describe several vulnerabilities that are specific to Juniper products, as well as tens of flaws impacting third-party components.

A majority of the weaknesses impact Junos OS, but some of them affect Juniper Secure Analytics, Junos Space and Junos Space Security Director.

One of the most serious vulnerabilities in software made by Juniper is CVE-2020-1647, a critical double free issue that affects SRX series firewalls with the ICAP redirect service enabled. It can allow a remote attacker to cause a DoS condition or execute arbitrary code by sending specially crafted HTTP messages.

Another critical security bug is CVE-2020-1654, which can also result in DoS or remote code execution. This vulnerability also affects SRX firewalls if the ICAP service is enabled and it can be exploited using malicious HTTP messages.

Half a dozen of the vulnerabilities have been rated high severity and all of them can be exploited for DoS attacks, including sustained attacks. The medium-severity flaws can also be exploited for DoS attacks.

Juniper Networks says it’s not aware of any attacks exploiting the vulnerabilities patched this week.

The company has also addressed tens of vulnerabilities affecting third-party components, including issues that were resolved years ago by their developers. The list includes OpenSSL, Intel firmware, Bouncy Castle, Java SE, Apache software, and others.

Last month, more than a dozen U.S. officials sent a letter to Juniper asking it about the results of the investigation launched in 2015 following the discovery of a backdoor in its products. The company was given a month to answer eight questions and the deadline expires on Friday.

Related: Juniper Networks Patches Over 60 Flaws in Junos, ATP Products

Related: Hackers Scanning for Citrix Systems Affected by Recent Vulnerabilities

Related: Palo Alto Networks Patches Command Injection Vulnerabilities in PAN-OS

Written By

Eduard Kovacs (@EduardKovacs) is a contributing editor at SecurityWeek. He worked as a high school IT teacher for two years before starting a career in journalism as Softpedia’s security news reporter. Eduard holds a bachelor’s degree in industrial informatics and a master’s degree in computer techniques applied in electrical engineering.

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