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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

1 year ago

Modified

Modified

11 months 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.

Common Vulnerabilities and Exposures (CVE)