Credentials management in Samba

1) Credentials management

EUVDB-ID: #VU32565

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4496

CWE-ID: CWE-255 - Credentials Management

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Samba 3.x before 3.6.23, 4.0.x before 4.0.16, and 4.1.x before 4.1.6 does not enforce the password-guessing protection mechanism for all interfaces, which makes it easier for remote attackers to obtain access via brute-force ChangePasswordUser2 (1) SAMR or (2) RAP attempts.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Samba: 3.0 - 3.6.22

CPE2.3

• cpe:2.3:a:samba:samba:3.0.37:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.2.15:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.3.16:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.4.17:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.5.22:*:*:*:*:*:*:*
• cpe:2.3:a:samba:samba:3.6.22:*:*:*:*:*:*:*

External links

https://advisories.mageia.org/MGASA-2014-0138.html
https://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
https://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00047.html
https://lists.opensuse.org/opensuse-security-announce/2016-04/msg00048.html
https://lists.opensuse.org/opensuse-updates/2014-03/msg00062.html
https://lists.opensuse.org/opensuse-updates/2014-03/msg00063.html
https://rhn.redhat.com/errata/RHSA-2014-0330.html
https://security.gentoo.org/glsa/glsa-201502-15.xml
https://www.mandriva.com/security/advisories?name=MDVSA-2015:082
https://www.samba.org/samba/history/samba-3.6.23.html
https://www.samba.org/samba/history/samba-4.0.16.html
https://www.samba.org/samba/history/samba-4.1.6.html
https://www.samba.org/samba/security/CVE-2013-4496
https://www.securityfocus.com/bid/66336
https://www.ubuntu.com/usn/USN-2156-1
https://bugzilla.samba.org/show_bug.cgi?id=10245
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05115993

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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