SB2019011112 - Remote code execution in SSH server in Fortinet FortiOS

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Main Vulnerability Database SB2019011112

SB2019011112 - Remote code execution in SSH server in Fortinet FortiOS

Published: January 11, 2019 Updated: January 28, 2019

Security Bulletin ID SB2019011112
CSH Severity
High
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Format string error (CVE-ID: CVE-2018-1352)

CWE-ID: CWE-134 - Use of Externally-Controlled Format String

CVSSv4: 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:U/U:Amber


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.


Remediation

Install update from vendor's website.

References