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Samba 3.0.0 <= 4.0.7 DoS Vulnerability (CVE-2013-4124)
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Samba 3.0.x to 4.0.7 are affected by a denial of service attack on authenticated or guest connections.
Insight
Insight
All current released versions of Samba are vulnerable to a denial of service on an authenticated or guest connection. A malformed packet can cause the smbd server to loop the CPU performing memory allocations and preventing any further service. A connection to a file share, or a local account is needed to exploit this problem, either authenticated or unauthenticated if guest connections are allowed. This flaw is not exploitable beyond causing the code to loop allocating memory, which may cause the machine to exceed memory limits.
Affected Software
Affected Software
Samba versions 3.0.0 through 3.5.21, 3.6.0 through 3.6.16 and 4.0.0 through 4.0.7.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 3.5.22, 3.6.17, 4.0.8 or later.