Vulnerability identifier: #VU44348

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2012-0817

CWE-ID: CWE-401

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Samba
Server applications / Directory software, identity management

Vendor: Samba

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within smbd in Samba 3.6.x before 3.6.3 allows remote attackers to cause a denial of service (memory and CPU consumption) by making many connection requests. A remote attacker can perform a denial of service attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Samba: 3.6.0 - 3.6.2

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2012-February/072930.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00014.html
http://secunia.com/advisories/47763
http://secunia.com/advisories/48879
http://www.samba.org/samba/history/samba-3.6.3.html
http://www.samba.org/samba/security/CVE-2012-0817

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.