NO VSTACK COMMAND NOT WORKING INSTALLCisco devices that are configured as a Smart Install director are not affected by this vulnerability. Only Smart Install client switches are affected by the vulnerability that is described in this advisory. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or IOS XE Software and have the Smart Install client feature enabled. The issue lies in the lack of proper validation of packet data which makes it possible for attackers to send out a well-crafted sequence of packets/bytes to cause a buffer overflow which could result in: Unlike previous SMI exposure reports, Cisco has officially stated this is a bona fide vulnerability and not “protocol misuse”. Jon’s blog post has a wealth of information on Cisco SMI exposure over the years and we’ll refrain from duplicating the historical content here. Rapid7’s own Jon Hart reported on Cisco Smart Install Exposure back in September of 2017. The Smart Install feature incorporates no authentication by design. The feature allows a customer to ship a Cisco switch to any location, install it in the network, and power it on without additional configuration requirements. Researchers from Embedi discovered (and responsibly disclosed) a stack-based buffer overflow weakness in Cisco Smart Install Client code which causes the devices to be susceptible to arbitrary remote code execution without authentication.Ĭisco Smart Install (SMI) is a “plug-and-play” configuration and image-management feature that provides zero-touch deployment for new (typically access layer) switches. Last updated at Fri, 14:59:08 GMT What’s Up?
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |