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Cisco SG550X switch - Suddenly restarted After SSH Login

Yasmeen
Level 1
Level 1

Hi Team

       We have one Cisco SG550X switch, I have just login using SSH protocol, After login the switch 
       The switch got Restarted automatically below is OS Version of it.
        Is this Switch BUG, Due to this issue my LAN Network got down for 5 Minutes. 

v2.5.0.83 / RTESLA2.5_930_364_091


Thanks,
Yasmeen Shaul Hameed.

4 Replies 4

If that happens only once, this is not a Bug.  When you hit a bug, the problem keep happening.

You may have a fault device and this required a RMA. 

Hi Flavio Miranda, 

                        This is Happened second time with our Office N/W. Also this SG550 switch is using as Core switch for LAN Network

 

 

 

Hello,

 

there is a security vulnerability alert out for SSH on the SG series switches. Basically, check if you have SSH user authentication by password enabled.

 

Notes:
SSH is not enabled on the affected platforms by default. To verify if SSH is enabled, navigate to Security > TCP/UDP Services and look for the Enabled checkbox next to SSH Service.
This issue is exploitable only with SSH User Authentication by Password enabled under Security > SSH Server > SSH User Authentication. (In 2.x software, this option is visible in Advanced display mode only.)

 

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-sbms

 

https://www.cvedetails.com/cve/CVE-2017-6720/

marce1000
VIP
VIP

 

 - Try to use latest firmware : https://software.cisco.com/download/home/286305619/type/282463181/release/2.5.8.15 and or check if that can help.

 M.



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