Permissions, Privileges, and Access Controls in Samba - CVE-2013-6442
Published: March 14, 2014 / Updated: July 28, 2020
Vulnerability identifier: #VU32566
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-6442
CWE-ID: CWE-264
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Samba
Affected software:
Samba
Samba
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The owner_set function in smbcacls.c in smbcacls in Samba 4.0.x before 4.0.16 and 4.1.x before 4.1.6 removes an ACL during use of a --chown or --chgrp option, which allows remote attackers to bypass intended access restrictions in opportunistic circumstances by leveraging an unintended administrative change.
How to mitigate CVE-2013-6442
Install update from vendor's website.
Sources
- http://lists.fedoraproject.org/pipermail/package-announce/2014-August/136864.html
- http://lists.fedoraproject.org/pipermail/package-announce/2014-June/134717.html
- http://lists.opensuse.org/opensuse-updates/2014-03/msg00062.html
- http://www.samba.org/samba/history/samba-4.0.16.html
- http://www.samba.org/samba/history/samba-4.1.6.html
- http://www.samba.org/samba/security/CVE-2013-6442
- http://www.securityfocus.com/bid/66232
- https://bugzilla.samba.org/show_bug.cgi?id=10327