Debian DSA-1908-1 : samba - several vulnerabilities

medium Nessus Plugin ID 44773

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Synopsis

The remote Debian host is missing a security-related update.

Description

Several vulnerabilities have been discovered in samba, an implementation of the SMB/CIFS protocol for Unix systems, providing support for cross-platform file and printer sharing with other operating systems and more. The Common Vulnerabilities and Exposures project identifies the following problems :

- CVE-2009-2948 The mount.cifs utility is missing proper checks for file permissions when used in verbose mode. This allows local users to partly disclose the content of arbitrary files by specifying the file as credentials file and attempting to mount a samba share.

- CVE-2009-2906 A reply to an oplock break notification which samba doesn't expect could lead to the service getting stuck in an infinite loop. An attacker can use this to perform denial of service attacks via a specially crafted SMB request.

- CVE-2009-2813 A lack of error handling in case no home directory was configured/specified for the user could lead to file disclosure. In case the automated [homes] share is enabled or an explicit share is created with that username, samba fails to enforce sharing restrictions which results in an attacker being able to access the file system from the root directory.

Solution

Upgrade the samba packages.

For the oldstable distribution (etch), this problem will be fixed soon.

For the stable distribution (lenny), this problem has been fixed in version 2:3.2.5-4lenny7.

Plugin Details

Severity: Medium

ID: 44773

File Name: debian_DSA-1908.nasl

Version: 1.15

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/24/2010

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.6

CVSS v2

Risk Factor: Medium

Base Score: 6

Temporal Score: 4.4

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:samba, cpe:/o:debian:debian_linux:5.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 10/14/2009

Reference Information

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

BID: 36363, 36572, 36573

CWE: 264

DSA: 1908

Detections

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