Buffer overflow in cookie parser in FortiOS - #VU322
Published: August 18, 2016 / Updated: August 29, 2016
Vulnerability identifier: #VU322
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber
CVE-ID: N/A
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Fortinet, Inc
Affected software:
FortiOS
FortiOS
Detailed vulnerability 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.
Remediation
This vulnerability is fixed in FortiOS firmware versions 4.1.11, 4.2.13, 4.3.9 and 5.0.