Vulnerability identifier: #VU44865

Vulnerability risk: Medium

CVSSv3.1: 6.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C]

CVE-ID: CVE-2011-2522

CWE-ID: CWE-352

Exploitation vector: Network

Exploit availability: Yes

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

Vendor: Samba

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Samba: 3.0.0 - 3.0.37, 3.1.0, 3.2.0 - 3.2.15, 3.3.0 - 3.3.12, 3.4.0 - 3.4.7, 3.5.0 - 3.5.9

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External links
http://jvn.jp/en/jp/JVN29529126/index.html
http://marc.info/?l=bugtraq&m=133527864025056&w=2
http://osvdb.org/74071
http://samba.org/samba/history/samba-3.5.10.html
http://secunia.com/advisories/45393
http://secunia.com/advisories/45488
http://secunia.com/advisories/45496
http://securityreason.com/securityalert/8317
http://securitytracker.com/id?1025852
http://ubuntu.com/usn/usn-1182-1
http://www.debian.org/security/2011/dsa-2290
http://www.exploit-db.com/exploits/17577
http://www.itrc.hp.com/service/cki/docDisplay.do?docId=emr_na-c03008543
http://www.mandriva.com/security/advisories?name=MDVSA-2011:121
http://www.samba.org/samba/security/CVE-2011-2522
http://www.securityfocus.com/bid/48899
http://bugzilla.redhat.com/show_bug.cgi?id=721348
http://bugzilla.samba.org/show_bug.cgi?id=8290
http://exchange.xforce.ibmcloud.com/vulnerabilities/68843

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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. However, proof of concept for this vulnerability is available.