#VU32622 Permissions, Privileges, and Access Controls in Samba - CVE-2013-4475
Vulnerability identifier: #VU32622
Vulnerability risk: Medium
CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-264
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Samba
Server applications /
Directory software, identity management
Vendor: Samba
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
Samba 3.2.x through 3.6.x before 3.6.20, 4.0.x before 4.0.11, and 4.1.x before 4.1.1, when vfs_streams_depot or vfs_streams_xattr is enabled, allows remote attackers to bypass intended file restrictions by leveraging ACL differences between a file and an associated alternate data stream (ADS).
Mitigation
Install update from vendor's website.
Vulnerable software versions
Samba: 3.2.0 - 3.2.15
External links
https://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
https://lists.opensuse.org/opensuse-security-announce/2014-01/msg00002.html
https://lists.opensuse.org/opensuse-updates/2013-11/msg00083.html
https://lists.opensuse.org/opensuse-updates/2013-11/msg00115.html
https://lists.opensuse.org/opensuse-updates/2013-11/msg00117.html
https://lists.opensuse.org/opensuse-updates/2013-12/msg00088.html
https://rhn.redhat.com/errata/RHSA-2013-1806.html
https://rhn.redhat.com/errata/RHSA-2014-0009.html
https://secunia.com/advisories/56508
https://security.gentoo.org/glsa/glsa-201502-15.xml
https://www.debian.org/security/2013/dsa-2812
https://www.samba.org/samba/history/samba-3.6.20.html
https://www.samba.org/samba/history/samba-4.0.11.html
https://www.samba.org/samba/history/samba-4.1.1.html
https://www.samba.org/samba/security/CVE-2013-4475
https://www.securityfocus.com/bid/63646
https://www.ubuntu.com/usn/USN-2054-1
https://blogs.oracle.com/sunsecurity/entry/cve_2013_4475_access_control
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.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
