High severity · published Feb 7, 2020
CVE-2019-16155
A privilege escalation vulnerability in FortiClient for Linux 6.2.1 and below may allow a user with low privilege to overwrite system files as root with arbitrary content through…
7.1
CVSS
0.4%
EPSS
No
On KEV
Description
A privilege escalation vulnerability in FortiClient for Linux 6.2.1 and below may allow a user with low privilege to overwrite system files as root with arbitrary content through system backup file via specially crafted "BackupConfig" type IPC client requests to the fctsched process. Further more, FortiClient for Linux 6.2.2 and below allow low privilege user write the system backup file under root privilege through GUI thus can cause root system file overwrite.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FO
Forticlient · Fortinet
through 6.2.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-16155
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-16155
Exploit
https://danishcyberdefence.dk/blog/forticlient_linux
Vendor Advisory
https://fortiguard.com/psirt/FG-IR-19-238
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