What is the severity of FG-IR-22-398?

The severity of FG-IR-22-398 is critical due to the potential for remote unauthenticated execution of arbitrary code.

How do I fix FG-IR-22-398?

To fix FG-IR-22-398, update your FortiOS to the latest patched version provided by Fortinet.

Who is affected by FG-IR-22-398?

FG-IR-22-398 affects users of FortiOS SSL-VPN who have not applied the necessary security updates.

What can an attacker do with FG-IR-22-398?

An attacker can exploit FG-IR-22-398 to execute arbitrary code or commands on affected systems.

Is there evidence of exploitation for FG-IR-22-398?

Yes, Fortinet has acknowledged that FG-IR-22-398 has been exploited in the wild.

Vulnerability/
FG-IR-22-398

critical

9.3

CWE

119

12/12/2022

FG-IR-22-398: Heap-based buffer overflow in sslvpnd

First published: Mon Dec 12 2022(Updated: )

A heap-based buffer overflow vulnerability [CWE-122] in FortiOS SSL-VPN may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests.## Exploitation status:Fortinet is aware of an instance where this vulnerability was exploited in the wild, and recommends immediately validating your systems against the following indicators of compromise:Multiple log entries with:Logdesc=Application crashed and msg=[...] application:sslvpnd,[...], Signal 11 received, Backtrace: [...]Presence of the following artifacts in the filesystem:/data/lib/libips.bak/data/lib/libgif.so/data/lib/libiptcp.so/data/lib/libipudp.so/data/lib/libjepg.so/var/.sslvpnconfigbk/data/etc/wxd.conf/flashConnections to suspicious IP addresses from the FortiGate:188.34.130.40:444103.131.189.143:30080,30081,30443,20443193.36.119.61:8443,444172.247.168.153:8033139.180.184.19766.42.91.32158.247.221.101107.148.27.117139.180.128.142155.138.224.122185.174.136.20 For more information on how to check for the presence of the indicators of compromise above, please visit this Knowledge Base entry, and contact customer support for assistance. ## Workaround:Disable SSL-VPN.## Changelog:2022-12-12: Added FOS6k/k 2022-12-22: Added FortiProxy2022-12-27: Corrected typo in IOCs: 192.36.119.61 => 193.36.119.61

Affected Software	Affected Version	How to fix
Fortinet FortiOS IPS Engine

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Reference Links

Frequently Asked Questions

What is the severity of FG-IR-22-398?
The severity of FG-IR-22-398 is critical due to the potential for remote unauthenticated execution of arbitrary code.
How do I fix FG-IR-22-398?
To fix FG-IR-22-398, update your FortiOS to the latest patched version provided by Fortinet.
Who is affected by FG-IR-22-398?
FG-IR-22-398 affects users of FortiOS SSL-VPN who have not applied the necessary security updates.
What can an attacker do with FG-IR-22-398?
An attacker can exploit FG-IR-22-398 to execute arbitrary code or commands on affected systems.
Is there evidence of exploitation for FG-IR-22-398?
Yes, Fortinet has acknowledged that FG-IR-22-398 has been exploited in the wild.

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agent/last-modified-date
agent/references
agent/type
agent/first-publish-date
agent/event
agent/severity
agent/title
collector/fortiguard-psirt
source/FortiGuard
alias/CVE-2022-42475
agent/description
agent/source
agent/softwarecombine
agent/tags
agent/guess-ai
agent/software-canonical-lookup
agent/software-canonical-lookup-request
vendor/fortinet
canonical/fortinet fortios ips engine

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Frequently Asked Questions

What is the severity of FG-IR-22-398?
The severity of FG-IR-22-398 is critical due to the potential for remote unauthenticated execution of arbitrary code.
How do I fix FG-IR-22-398?
To fix FG-IR-22-398, update your FortiOS to the latest patched version provided by Fortinet.
Who is affected by FG-IR-22-398?
FG-IR-22-398 affects users of FortiOS SSL-VPN who have not applied the necessary security updates.
What can an attacker do with FG-IR-22-398?
An attacker can exploit FG-IR-22-398 to execute arbitrary code or commands on affected systems.
Is there evidence of exploitation for FG-IR-22-398?
Yes, Fortinet has acknowledged that FG-IR-22-398 has been exploited in the wild.