The U.S. Department of Homeland Security (DHS) this week issued a new Binding Operational Directive (BOD) instructing federal agencies and departments to act more quickly when it comes to patching serious vulnerabilities in internet-exposed systems.
Specifically, BOD 19-02 gives government organizations 15 days to address critical vulnerabilities and 30 days for high-severity flaws. The countdown starts when a vulnerability was initially detected, rather than when it was first reported to agencies.
Internet-exposed government systems undergo Cyber Hygiene scanning to help agencies identify vulnerabilities. The recently created Cybersecurity and Infrastructure Security Agency (CISA) provides regular reports to agencies, informing them of the detected flaws, classified based on their CVSSv2 score.
The new BOD 19-02 also instructs the CISA to provide technical expertise and guidance for remediation, and send a monthly report to the Office of Management and Budget (OMB) to identify trends and challenges and facilitate any policy or budget-related actions that may be required.
Agencies that fail to address vulnerabilities within the allocated time frame have been given three days to submit a remediation plan describing the constraints that prevent it from addressing the flaw, mitigations, and an estimated completion date. CISA will provide pre-populated remediation plan templates to ensure that the information can be provided in such a short time.
BOD 19-02 replaces the 2015 BOD 15-01 (Critical Vulnerability Mitigation Requirement for Federal Civilian Executive Branch Departments and Agencies’ Internet-Accessible Systems), which gave government organizations 30 days to patch critical security holes.
“The federal government must continue to enhance our security posture, reduce risks posed by vulnerable Internet-accessible systems, and build upon the success of BOD 15-01 by advancing federal requirements for high and critical vulnerability remediation to further reduce the attack surface and risk to federal agency information systems,” the DHS said.
However, some experts believe 15 days might not be quick enough in some situations.
“This is a good initiative, one for which all reputable private sector enterprises already subscribe to via third party scanning services. It wouldn’t surprise me if some government agencies also subscribe to similar services in the private sector as it is definitely a best practice in the industry,” Mounir Hahad, head of Juniper Networks’ Juniper Threat Labs, told SecurityWeek.
However, Hahad added, “I would argue that the directive does not go far enough to call out critical vulnerabilities for which proofs of concept may already be published or for which developing an exploit is trivial. Those indeed have a higher chance of being exploited by threat actors in record time. In my view, 15 days for remediation is too slow in those circumstances.”