Important note about SSL VPN compatibility for 20.0 MR1 with EoL SFOS versions and UTM9 OS. Learn more in the release notes.

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SSH Terrapin Prefix Truncation Weakness (CVE-2023-48795

Manoj Pathak

in recent scanning, we received "SSH Terrapin Prefix Truncation Weakness (CVE-2023-48795)" vulnerability on port 22.

just use this command in nmap "nmap -sV -p 22 --script ssh2-enum-algos 192.168.xxx.xxx"

if it shows "chacha20-poly1305@openssh.com" or any this with "-etm" then it will enables the Terrapin Attack.

i had latest firmware version SFOS 20.0.0 GA-Build222.

will it get patch or need to do anything manually.

.



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    While it is true, this is currently an open situation in SFOS, it is highly unlikely to be exploited in the network.

    See: https://terrapin-attack.com/

    See: https://nvd.nist.gov/vuln/detail/CVE-2023-48795

    You would have a SSH connection open to the firewall and someone does a man in the middle in your network.

    Unlikely in a open network and going from WAN, having such an attacker in the own network, doing man in the middle and then capturing your SSH session is unlikely. 

    __________________________________________________________________________________________________________________

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  • 0

    While it is true, this is currently an open situation in SFOS, it is highly unlikely to be exploited in the network.

    See: https://terrapin-attack.com/

    See: https://nvd.nist.gov/vuln/detail/CVE-2023-48795

    You would have a SSH connection open to the firewall and someone does a man in the middle in your network.

    Unlikely in a open network and going from WAN, having such an attacker in the own network, doing man in the middle and then capturing your SSH session is unlikely. 

    __________________________________________________________________________________________________________________

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