Cisco has decided to modify its vulnerability disclosure policy and give software vendors more time to patch the flaws discovered by the Talos security intelligence and research group before disclosing their details.
Based on vendor feedback and the average time it takes companies to patch vulnerabilities, Cisco has extended its deadline from 60 days to 90 days.
On the day a vulnerability is discovered, Cisco attempts to contact the vendor and releases protections for customers using its security products. If the vendor doesn’t respond, a second contact attempt is made after seven days. The vendor notification date is published on Cisco’s vulnerability tracking site after 15 days.
If the affected vendor still doesn’t respond after 45 days, the Computer Emergency Response Team Coordination Center (CERT/CC) at Carnegie Mellon University is notified. Finally, both CERT/CC and Cisco publish vulnerability reports after 90 days.
“Whenever appropriate Cisco Talos will review timeline objectives with the vendor in order to sufficiently provide time for patching to take place. This will be reviewed on a case by case basis to ensure that there is a progression in patching. Extenuating circumstances, such as threats of any nature, may result in adjustments to disclosures and timelines either forward or backward,” Cisco said.
Cisco’s data shows that the average time-to-patch (TTP) has been 78 days. It’s worth noting that it takes commercial software companies more time to release fixes (80 days) than it does open source software developers (42 days). Cisco said one open source vendor set a new record by issuing a patch on the same day it learned about the flaw.
In the case of commercial software companies, there are firms that manage to patch within the given timeframe and ones that fail to do so. The average TTP for quick-turnaround companies is 38 days and for “lagging” companies it’s 113 days.
Google also gives vendors 90 days to patch vulnerabilities, but the deadline is reduced to only 7 days if the security hole is actively exploited, as was the case recently when attackers exploited a Windows zero-day in targeted attacks.