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Public Date:
1044099: CVE-2013-6442 samba: smbcacls will delete ACL lists in certain circumstances

The MITRE CVE dictionary describes this issue as:

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.

Find out more about CVE-2013-6442 from the MITRE CVE dictionary dictionary and NIST NVD.

CVSS v2 metrics

NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.

Base Score 4.1
Base Metrics AV:A/AC:L/Au:S/C:P/I:P/A:N
Access Vector Adjacent Network
Access Complexity Low
Authentication Single
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact None

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux 6 (samba4) RHSA-2014:0383 2014-04-09

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 5 samba Not affected
Red Hat Enterprise Linux 5 samba3x Not affected
Red Hat Enterprise Linux 6 samba Not affected
Red Hat Enterprise Linux 7 samba Not affected


Red Hat would like to thank the Samba project for reporting this issue. Upstream acknowledges Noel Power as the original reporter.