Zero-day Vulnerability Database

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Zero-day vulnerabilities discovered: 1

Remote code execution in Fortinet FortiOS and FortiSwitch
CVE-2016-6909

Buffer overflow

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exist due to a boundary error within cookie parser. A remote attacker can send a specially crafted HTTP request, cause memory corruption and execute arbitrary code on vulnerable system.

Successful exploitation of the vulnerability may allow an attacker to gain unauthorized access to vulnerable system.

Note:the vulnerability was being actively exploited.

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Information about zero-day vulnerabilities in Cisco and FortiOS products was exposed after NSA data leak in August 2016. The tools bear digital signatures that match those used by the Equation Group, a group that has alleged links to the NSA. The incident highlights the risk of hoarding zero-day vulnerabilities.

EGREGIOUSBLUNDER is one of multiple Equation Group vulnerabilities and exploits disclosed on 2016/08/14 by a group known as the Shadow Brokers.

Software: FortiOS

Information about zero-day vulnerabilities in Cisco and FortiOS products was exposed after NSA data leak in August 2016. The tools bear digital signatures that match those used by the Equation Group, a group that has alleged links to the NSA. The incident highlights the risk of hoarding zero-day vulnerabilities.

EGREGIOUSBLUNDER is one of multiple Equation Group vulnerabilities and exploits disclosed on 2016/08/14 by a group known as the Shadow Brokers.

Links:

http://fortiguard.com/advisory/FG-IR-16-023
http://www.computerworld.com/article/3109307/security/cisco-and-fortinet-issue-patches-against-nsa-m...
https://www.sans.org/newsletters/newsbites/xviii/66#201
https://www.trendmicro.com/vinfo/us/threat-encyclopedia/vulnerability/7381/fortinet-fortigate-cookie...
http://netformation.com/level-3-pov/shadow-brokers-hit-the-light-of-day
https://vulners.com/nessus/FORTIOS_COOKIE_PARSING_BOF.NASL
https://www.riskbasedsecurity.com/2016/08/the-shadow-brokers-lifting-the-shadows-of-the-nsas-equatio...
https://tools.cisco.com/security/center/viewAlert.x?alertId=48526
https://www.tenable.com/plugins/index.php?view=single&id=93196

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About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.