Samba maintainers have just released new versions of their networking software to patch two critical vulnerabilities that could allow unprivileged remote attackers to launch DoS attacks against servers and change any other users' passwords, including admin's.
Samba is open-source software (re-implementation of SMB networking protocol) that runs on the majority of operating systems available today, including Windows, Linux, UNIX, IBM System 390, and OpenVMS.
Samba allows non-Windows operating systems, like GNU/Linux or Mac OS X, to share network shared folders, files, and printers with Windows operating system.
The denial of service vulnerability, assigned CVE-2018-1050, affects all versions of Samba from 4.0.0 onwards and could be exploited "when the RPC spoolss service is configured to be run as an external daemon."
"Missing input sanitization checks on some of the input parameters to spoolss RPC calls could cause the print spooler service to crash. If the RPC spoolss service is left by default as an internal service, all a client can do is crash its own authenticated connection." Samba advisory
says.
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