An out-of-bounds write vulnerability [CWE-787] and a Stack-based Buffer Overflow [CWE-121] in FortiOS & FortiProxy captive portal may allow an inside attacker who has access to captive portal to execute arbitrary code or commands via specially crafted HTTP requests.
Workaround:
Set a non form-based authentication scheme:
config authentication schemeedit schemeset method methodnextend
Where <method> can be any of those :
ntlm NTLM authentication.basic Basic HTTP authentication.digest Digest HTTP authentication.negotiate Negotiate authentication.fsso Fortinet Single Sign-On (FSSO) authentication.rsso RADIUS Single Sign-On (RSSO) authentication.ssh-publickey Public key based SSH authentication.cert Client certificate authentication.saml SAML authentication
None of the enabled authentication schemes should be form-based.
Please note that only devices with captive portal enabled are affected.
An improper privilege management vulnerability [CWE-269] in a Fortinet FortiOS HA cluster version 7.4.0 through 7.4.1 and 7.2.5 and in a FortiProxy HA cluster version 7.4.0 through 7.4.1 allows an authenticated attacker to perform elevated actions via crafted HTTP or HTTPS requests.
A insufficiently protected credentials in Fortinet FortiProxy 7.4.0, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 2.0.0 through 2.0.13, 1.2.0 through 1.2.13, 1.1.0 through 1.1.6, 1.0.0 through 1.0.7, Fortinet FortiOS 7.4.0 through 7.4.1, 7.2.0 through 7.2.6, 7.0.0 through 7.0.12, 6.4.0 through 6.4.14, 6.2.0 through 6.2.15, 6.0.0 through 6.0.17 allows attacker to execute unauthorized code or commands via targeted social engineering attack
An improper privilege management vulnerability [CWE-269] in a FortiOS & FortiProxy HA cluster may allow an authenticated attacker to perform elevated actions over the web administrative interface via crafted HTTP or HTTPS requests.
An authorization bypass through user-controlled key vulnerability [CWE-639] in FortiOS and FortiProxy SSLVPN may allow an authenticated attacker to gain access to another user’s bookmark via URL manipulation.
An exposure of sensitive information to an unauthorized actor in Fortinet FortiOS at least version at least 7.4.0 through 7.4.1 and 7.2.0 through 7.2.5 and 7.0.0 through 7.0.15 and 6.4.0 through 6.4.15 allows attacker to information disclosure via HTTP requests.
An insufficiently protected credentials vulnerability (CWE-522) in FortiOS and FortiProxy may allow an attacker to obtain the administrator cookie in rare and specific conditions, via tricking the administrator into visiting a malicious attacker-controlled website through the SSL-VPN.
An improper check or handling of exceptional conditions vulnerability [CWE-703] in Fortinet FortiOS version 7.4.1 allows an unauthenticated attacker to provoke a denial of service on the administrative interface via crafted HTTP requests.
An authorization bypass through user-controlled key vulnerability [CWE-639] in FortiOS and FortiProxy SSLVPN may allow an authenticated attacker to gain access to another user’s bookmark via URL manipulation.
A stack-based buffer overflow [CWE-121] vulnerability in Fortinet FortiOS version 7.2.1 through 7.2.6 and version 7.4.0 through 7.4.1 allows a privileged attacker over the administrative interface to execute arbitrary code or commands via crafted HTTP or HTTPs requests.
A stack-based buffer overflow [CWE-121] vulnerability in FortiOS administrative interface may allow a privileged attacker to execute arbitrary code or commands via crafted HTTP or HTTPs requests.
A use of externally-controlled format string vulnerability [CWE-134] in FortiOS version 7.4.1 and below, version 7.2.7 and below, 7.0 all versions, 6.4 all versions command line interface may allow a local privileged attacker with super-admin profile and CLI access to execute arbitrary code or commands via specially crafted requests.
A use of externally-controlled format string vulnerability [CWE-134] in FortiOS command line interface may allow a local privileged attacker with CLI access to execute arbitrary code or commands via specially crafted requests.
The Fortinet Product Security team has evaluated the impact of the vulnerablity HTTP/2 Rapid Reset Attack, listed below:CVE-2023-44487:The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly.https://nvd.nist.gov/vuln/detail/CVE-2023-44487
An exposure of sensitive information to an unauthorized actor vulnerability [CWE-200] in FortiOS may allow an unauthenticated attacker to fingerprint the device version via HTTP requests.
An insufficient verification of data authenticity vulnerability [CWE-345] in Fortinet FortiOS SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.12 & FortiProxy SSL-VPN tunnel mode version 7.4.0 through 7.4.1, version 7.2.0 through 7.2.7 and before 7.0.13 allows an authenticated VPN user to send (but not receive) packets spoofing the IP of another user via crafted network packets.
An origin validation error [CWE-346] vulnerability in Fortinet FortiOS IPSec VPN version 7.4.0 through 7.4.1 and version 7.2.6 and below allows an authenticated IPSec VPN user with dynamic IP addressing to send (but not receive) packets spoofing the IP of another user via crafted network packets.
An insufficient verification of data authenticity vulnerability [CWE-345] in FortiOS & FortiProxy SSL-VPN tunnel mode may allow an authenticated VPN user to send (but not receive) packets spoofing the IP of another user via crafted network packets.
An origin validation error [CWE-346] vulnerability in FortiOS IPSec VPN may allow an authenticated IPSec VPN user with dynamic IP addressing to send (but not receive) packets spoofing the IP of another user via crafted network packets.
An improper certificate validation vulnerability [CWE-295] in FortiOS may allow an unauthenticated attacker in a Man-in-the-Middle position to decipher and alter the FortiLink communication channel between the FortiOS device and a FortiSwitch instance.