Scientific Linux Security Update : samba on SL3.x, SL4.x, SL5.x i386/x86_64

Medium Nessus Plugin ID 60684

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VPR Score: 6.1

Synopsis

The remote Scientific Linux host is missing one or more security updates.

Description

A denial of service flaw was found in the Samba smbd daemon. An authenticated, remote user could send a specially crafted response that would cause an smbd child process to enter an infinite loop. An authenticated, remote user could use this flaw to exhaust system resources by opening multiple CIFS sessions. (CVE-2009-2906)

An uninitialized data access flaw was discovered in the smbd daemon when using the non-default 'dos filemode' configuration option in 'smb.conf'. An authenticated, remote user with write access to a file could possibly use this flaw to change an access control list for that file, even when such access should have been denied. (CVE-2009-1888)

A flaw was discovered in the way Samba handled users without a home directory set in the back-end password database (e.g. '/etc/passwd').
If a share for the home directory of such a user was created (e.g.
using the automated '[homes]' share), any user able to access that share could see the whole file system, possibly bypassing intended access restrictions.(CVE-2009-2813)

The mount.cifs program printed CIFS passwords as part of its debug output when running in verbose mode. When mount.cifs had the setuid bit set, a local, unprivileged user could use this flaw to disclose passwords from a file that would otherwise be inaccessible to that user. Note: mount.cifs from the samba packages distributed by Red Hat does not have the setuid bit set. This flaw only affected systems where the setuid bit was manually set by an administrator.
(CVE-2009-2948) This update also fixes the following bug for SL3 :

- an earlier update added code to escape input passed to scripts that are run by Samba. This code was missing 'c' from the list of valid characters, causing it to be escaped. With this update, the previous patch has been updated to include 'c' in the list of valid characters.
(BZ#242754)

After installing this update, the smb service will be restarted automatically.

Solution

Update the affected packages.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=242754

http://www.nessus.org/u?1a2ed9ad

Plugin Details

Severity: Medium

ID: 60684

File Name: sl_20091027_samba_on_SL3_x.nasl

Version: 1.7

Type: local

Agent: unix

Published: 2012/08/01

Updated: 2019/10/25

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 6.1

CVSS v2.0

Base Score: 6

Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RedHat/release, Host/RedHat/rpm-list

Patch Publication Date: 2009/10/27

Reference Information

CVE: CVE-2009-1888, CVE-2009-2813, CVE-2009-2906, CVE-2009-2948

CWE: 264