Security researchers from SEC Consult Vulnerability Lab discovered that multiple Fortinet products use a weak encryption cipher (“XOR” with a static key) and cryptographic keys to communicate with the FortiGuard Web Filter, AntiSpam and AntiVirus cloud services.
An attacker could exploit the issues to eavesdrop on user traffic and manipulate it.
The flaw discovered by SEC Consult Vulnerability Lab researchers has been tracked as CVE-2018-9195, the experts also published a proof-of-concept (PoC) code to trigger it.
“The messages are encrypted using XOR “encryption” with a static key.”
The vulnerability affects versions of
Fortinet also published a security advisory on the vulnerability.
“Use of a
Fortinet credited Stefan Viehböck for the flaw, the researcher and responsibly reported it to Fortinet on May 16, 2018.
Experts at SEC Consult pointed out that by intercepting and manipulating internet traffic an attacker can alter the responses for FortiGuard Web Filter, AntiSpam and AntiVirus features.
(SecurityAffairs – Fortinet, hacking)
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