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Samba 'fd_open_atomic infinite loop' Denial-of-Service Vulnerability

Information

Severity

Severity

Medium

Family

Family

Denial of Service

CVSSv2 Base

CVSSv2 Base

6.8

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

5 years ago

Modified

Modified

3 years ago

Summary

This host is running Samba and is prone to denial-of-service vulnerability.

Insight

Insight

The flaw exists due to error in smbd which enters infinite loop when trying to open an invalid symlink with O_CREAT.

Affected Software

Affected Software

Samba versions before 4.4.10 and 4.5.x before 4.5.6

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to Samba 4.4.10 or 4.5.6 or later.

Common Vulnerabilities and Exposures (CVE)