Security Experts:

Connect with us

Hi, what are you looking for?



Juniper Networks Patches Vulnerabilities in Contrail Networking, Junos OS

Juniper Networks this week announced the release of patches for more than 30 vulnerabilities across its portfolio, including severe flaws in Contrail Networking and Junos OS.

Juniper Networks this week announced the release of patches for more than 30 vulnerabilities across its portfolio, including severe flaws in Contrail Networking and Junos OS.

Two advisories describing a total of 13 security holes in the Contrail Networking software-defined networking (SDN) solution were published this week, with seven of the bugs carrying a CVSS score above 9.0.

The first of the advisories covers ten issues impacting Contrail Networking releases prior to 2011.L4. Five of these security defects are rated critical and all of them were identified last year.

The most severe of these are two buffer overflow vulnerabilities in Pillow (CVE-2021-25289 and CVE-2021-34552) and a heap overflow in Apache HTTP Server (CVE-2021-26691). All three have a CVSS score of 9.8.

With a CVSS score of 9.4, the other two impact the nginx resolver (CVE-2021-23017) and the xmlhttprequest-ssl package (CVE-2021-31597).

[ READ: Cisco Patches Critical Vulnerability in Wireless LAN Controller ]

The second advisory describes two critical issues in Contrail Networking prior to version 21.3. These include a remote code execution bug in Git for Visual Studio (CVE-2019-1349) and a denial of service (DoS) in the pcre_compile function in pcre_compile.c in PCRE (CVE-2015-8391).

This week, Juniper Networks also announced patches for 14 vulnerabilities in Junos OS and Junos OS Evolved, including 10 issues rated “high severity,” which could lead to code execution or DoS, in certain conditions.

Juniper Networks says it is not aware of any of these Junos OS vulnerabilities being exploited in attacks, but encourages customers to update to a patched release as soon as possible.

The US Cybersecurity and Infrastructure Security Agency (CISA) too is encouraging users and administrators to review the advisories and apply the necessary fixes immediately.

“An attacker could exploit some of these vulnerabilities to take control of an affected system,” CISA warns.

Related: Citrix Patches Vulnerabilities in Several Products

Related: SAP Releases Patches for Spring4Shell Vulnerability

Related: Juniper Networks Patches Over 70 Vulnerabilities

Written By

Ionut Arghire is an international correspondent for SecurityWeek.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


Apple has released updates for macOS, iOS and Safari and they all include a WebKit patch for a zero-day vulnerability tracked as CVE-2023-23529.

Application Security

Drupal released updates that resolve four vulnerabilities in Drupal core and three plugins.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

IoT Security

Lexmark warns of a remote code execution (RCE) vulnerability impacting over 120 printer models, for which PoC code has been published.

Application Security

A CSRF vulnerability in the source control management (SCM) service Kudu could be exploited to achieve remote code execution in multiple Azure services.


GoAnywhere MFT users warned about a zero-day remote code injection exploit that can be targeted directly from the internet