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Samba 4.0.0 <= 4.0.17 Improper Input Validation Vulnerability (CVE-2014-0239)
Information
Severity
Severity
Medium
Family
Family
Denial of Service
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
2 years ago
Modified
Modified
2 years ago
Summary
Potential DOS in Samba internal DNS server.
Insight
Insight
Samba versions 4.0.0 and above have a flaw in DNS protocol handling in the internal DNS server. The server will not check the 'reply' flag in the DNS packet header when processing a request. That makes it vulnerable to reply to a spoofed reply packet with another reply. Two affected servers could thus DOS each other.
Affected Software
Affected Software
Samba versions 4.0.0 through 4.0.17.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 4.0.18 or later.