Stay updated on F5 security insights: Explore the latest in application delivery controls, threat intelligence, and cyber defense with F5 tag news.
Search across headline titles and summaries.
Background for this topic.
F5 provides application-delivery technology, best known in security operations for BIG-IP appliances and software that load-balance traffic, terminate TLS, route requests, and can enforce web-application firewall, access-control, and denial-of-service protections. F5’s NGINX products are also used as reverse proxies and web servers. These components sit in front of applications, mediating internet traffic and trust boundaries.
Their privileged position makes exposed management interfaces, insecure configurations, leaked certificates or keys, and unpatched vulnerabilities especially significant: compromise can enable traffic interception, authentication bypass, request manipulation, or access to protected applications, depending on deployment. Security teams should inventory BIG-IP and NGINX instances and versions, restrict management planes, apply vendor fixes, review iRules, WAF, and access policies, and monitor administrative and anomalous proxy activity. During incidents, preserve configuration and traffic logs and assess whether TLS credentials or backend routes were exposed.
Also, phishing's easier over the phone, and your F5 cookies might be unencrypted, and more in brief If you need an excuse to improve your patching habits, a joint advisory from the US and UK governments about a massive, ongoing Russian campaign exploiting known vulnerabilities should do the trick.…
Agency Says Cookies Could Help Attackers Find Network Assets, VulnerabilitiesUnencrypted cookies tied to a suite of secure gateway technology from F5 are gateways for hackers to reach internal devices on corporate networks, warns the Cybersecurity and Infrastructure Security Agency. BIG-IP uses persistent cookies as a traffic load-balancing convenience.
CISA is warning that threat actors have been observed abusing unencrypted persistent F5 BIG-IP cookies to identify and target other internal devices on the targeted network. [...]
CISA is warning that threat actors have been observed abusing unencrypted persistent F5 BIG-IP cookies to identify and target other internal devices on the targeted network. [...]
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning that it has observed threat actors leveraging unencrypted persistent cookies managed by the F5 BIG-IP Local Traffic Manager (LTM) module to conduct reconnaissance of target networks