Format string error in FortiOS - CVE-2018-1352
Published: January 28, 2019
Vulnerability identifier: #VU17231
CSH Severity: High
CVSS v4: 9.3 [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]
CVE-ID: CVE-2018-1352
CWE-ID: CWE-134
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a format string error when processing supplied username within the SSH server. A remote attacker can supply a specially crafted username that contains format string specifiers, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Affected software
FortiOS
How to mitigate CVE-2018-1352
Install updates from vendor's website.
FortiOS - update to 5.6.1