Vulnerability identifier: #VU322
Vulnerability risk: High
CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
FortiOS
Operating systems & Components /
Operating system
Vendor: Fortinet, Inc
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in cookie parser within management we interface. A remote unauthenticated attacker can send a specially crafted HTTP request containing a very long cookie, trigger buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in denial of service or complete compromise of the device.
Mitigation
This vulnerability is fixed in FortiOS firmware versions 4.1.11, 4.2.13, 4.3.9 and 5.0.
Vulnerable software versions
FortiOS: 4.1.0 - 4.1.10, 4.2.0 - 4.2.12, 4.3.0 - 4.3.8
External links
http://fortiguard.com/advisory/FG-IR-16-023
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.