Sysax Multi-Server <= 6.10 SSHD Key Exchange DoS
36Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 8.7epss 1.1%
from disclosure to weapon0 days
Published on NVDAug 5
metasploitMar 17
exploitation probability
1.1%top 36% of all CVEs
observed exploitation
nono source reports it
A denial-of-service vulnerability exists in Sysax Multi-Server version 6.10 via its SSH daemon. A specially crafted SSH key exchange packet can trigger a crash in the service, resulting in loss of availability. The flaw is triggered during the handling of malformed key exchange data, including a non-standard byte (\x28) in place of the expected SSH protocol delimiter.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected products
Sysax Software · Multi-ServerReferences
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/auxiliary/dos/windows/ssh/sysax_sshd_kexchange.rbhttps://www.mattandreko.com/2013/04/08/sysax-multi-server-6.10-ssh-dos/https://www.sysax.com/https://www.vulncheck.com/advisories/sysax-multi-server-sshd-key-exchange-dos