New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 3.6
SynopsisThe remote Samba server is affected by a memory corruption vulnerability.
DescriptionAccording to its banner, the version of Samba 3.x running on the remote host is earlier than 3.3.15 / 3.4.12 / 3.5.7. An error exists in the range checks on file descriptors in the 'FD_SET' macro that allows stack corruption. This corruption can cause Samba to crash or to continually try selecting on an improper descriptor set.
An attacker who is able to get a connection to a file share, either authenticated or via a guest connection, can leverage this issue to launch a denial of service attack against the affected smbd service.
Note the possibility of arbitrary code execution exists with this type of vulnerability but has not been confirmed.
Also note that Nessus has not actually tried to exploit this issue or otherwise determine if one of the patches has been applied.
SolutionEither apply one of the patches referenced in the project's advisory or upgrade to 3.3.15 / 3.4.12 / 3.5.7 or later.