A stack buffer overflow vulnerability in FortiClient for Linux 6.2.1 and below may allow a user with low privilege to cause FortiClient processes running under root priviledge crashes via sending specially crafted "StartAvCustomScan" type IPC client requests to the fctsched process due the argv data not been well sanitized.
The product writes data past the end, or before the beginning, of the intended buffer.
Link | Tags |
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https://fortiguard.com/psirt/FG-IR-19-238 | vendor advisory |
https://danishcyberdefence.dk/blog/forticlient_linux | third party advisory exploit |