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Juniper Networks Patches Several Flaws With Junos Updates

Updates released by Juniper Networks for its Junos operating system patch several high and medium severity vulnerabilities. The company has also updated some of the third-party software used by its products.

Updates released by Juniper Networks for its Junos operating system patch several high and medium severity vulnerabilities. The company has also updated some of the third-party software used by its products.

Juniper Networks informed customers on Tuesday that it has launched an investigation into the new batch of exploits made public last week by the hacker group calling itself Shadow Brokers. The first round of files leaked by the Shadow Brokers in the summer of 2016 was found to contain some exploits targeting devices running Juniper’s ScreenOS.

Until it determines if any of its products are targeted by the newly released exploits, which are believed to have been used by the NSA-linked Equation Group, Juniper Networks has released updates that patch several vulnerabilities in the FreeBSD-based Junos OS.

The most severe of the flaws, based on its CVSS score, is CVE-2016-10142, an issue related to the IPv6 protocol specification, namely ICMP Packet Too Big (PTB) messages. The vulnerability can be exploited for denial-of-service (DoS) attacks.

Another high severity flaw is CVE-2016-1886, a keyboard driver buffer overflow that can be exploited to cause a DoS condition, read parts of the kernel memory, or execute arbitrary code.

It’s worth pointing out that CVE-2016-10142 and CVE-2016-1886 are not specific to Juniper products; the vulnerabilities are in FreeBSD and other Linux distributions.

The third high severity vulnerability is CVE-2017-2313, a DoS issue that affects some Junos systems when BGP is enabled.

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The medium severity weaknesses disclosed by the company this week are DoS flaws affecting various configurations. These security holes are tracked as CVE-2017-2313, CVE-2017-2312 and CVE-2017-2340.

Juniper is not aware of any instances where these vulnerabilities have been exploited for malicious purposes.

The vendor also announced patches for vulnerabilities affecting its NorthStar Controller application, and updates for the BIND and NTP components used by the company’s products. The NTP and BIND patches applied by Juniper were first made available several months ago, and other fixes have since been released for both NTP and BIND.

Related: Juniper Starts Fixing IPv6 Processing Vulnerability

Related: DoS Vulnerability Affects Cisco, Juniper Products

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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