Juniper Networks informed customers this week that it has patched tens of vulnerabilities, including serious issues that can be exploited to take control of affected systems.
Juniper Networks has published 40 security advisories describing vulnerabilities in its Junos OS operating system, which powers the company’s firewalls, and various third-party components.
Several vulnerabilities that have collectively been assigned a critical severity rating have been found in the Juniper Networks Mist Cloud UI. The bugs, related to Security Assertion Markup Language (SAML) authentication, allow a remote attacker to bypass SAML authentication.
Juniper has also informed customers of a critical remote code execution vulnerability affecting the Telnet server used by Junos OS.
The other flaws rated critical affect third-party components, including SQLite and the PyYAML YAML parser.
The company has released over a dozen advisories for high-severity vulnerabilities. Many of these weaknesses can be exploited for denial-of-service (DoS) attacks, but some could allow arbitrary code execution, including by sending specially crafted messages or via cross-site scripting (XSS).
While Juniper says that it has found no evidence of malicious exploitation, the advisories for some of the flaws do inform users about the public availability of exploits.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has advised organizations to review the Juniper advisories and apply the updates.