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 Michael Koyfman
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Profile of Michael Koyfman

Senior Global Security Solution Architect, F5 Networks
News & Commentary Posts: 1

Michael Koyfman is a Sr. Global Security Solution Architect with F5 Networks with a 12 year tenure with the company.  He is focused on the entire portfolio of F5 Security products, and over the last 7 years has been a key contributor to implementation, strategy, and evolution of F5 security products and solutions. Michael helped architect, develop, and demonstrate various unique F5 integration solutions with vendors such as Microsoft, Citrix, Vmware, Oracle, IBM, etc., and launch new Herculon brand of F5 dedicated security products.  Prior to F5, he led development and implementation of managed security offering at SiteSmith. He also worked at several Fortune 500 companies managing and architecting Internet Data Center security and infrastructure.

Articles by Michael Koyfman
COVID-19: Latest Security News & Commentary
Dark Reading Staff 6/1/2020
Stay-at-Home Orders Coincide With Massive DNS Surge
Robert Lemos, Contributing Writer,  5/27/2020
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From DHS/US-CERT's National Vulnerability Database
CVE-2019-20811
PUBLISHED: 2020-06-03
An issue was discovered in the Linux kernel before 5.0.6. In rx_queue_add_kobject() and netdev_queue_add_kobject() in net/core/net-sysfs.c, a reference count is mishandled, aka CID-a3e23f719f5c.
CVE-2019-20812
PUBLISHED: 2020-06-03
An issue was discovered in the Linux kernel before 5.4.7. The prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067.
CVE-2020-13776
PUBLISHED: 2020-06-03
systemd through v245 mishandles numerical usernames such as ones composed of decimal digits or 0x followed by hex digits, as demonstrated by use of root privileges when privileges of the 0x0 user account were intended. NOTE: this issue exists because of an incomplete fix for CVE-2017-1000082.
CVE-2019-20810
PUBLISHED: 2020-06-03
go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel before 5.6 does not call snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586.
CVE-2020-4026
PUBLISHED: 2020-06-03
The CustomAppsRestResource list resource in Atlassian Navigator Links before version 3.3.23, from version 4.0.0 before version 4.3.7, from version 5.0.0 before 5.0.1, and from version 5.1.0 before 5.1.1 allows remote attackers to enumerate all linked applications, including those that are restricted...