Ubuntu 4.10 : samba vulnerability (USN-29-1)

critical Nessus Plugin ID 20644

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

During an audit of the Samba 3.x code base Stefan Esser discovered a Unicode file name buffer overflow within the handling of TRANSACT2_QFILEPATHINFO replies. A malicious samba user with write access to a share could exploit this by creating specially crafted path names (files with very long names containing Unicode characters) that would overflow an internal buffer and could lead to remote execution of arbitrary code with the privileges of the samba server.

Since the samba server usually (by default) runs as root, this flaw can lead to privilege escalation and unbounded system compromise.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 20644

File Name: ubuntu_USN-29-1.nasl

Version: 1.14

Type: local

Agent: unix

Family: Ubuntu Local Security Checks

Published: 1/15/2006

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.8

CVSS v2

Risk Factor: Critical

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:samba-doc, p-cpe:/a:canonical:ubuntu_linux:smbclient, p-cpe:/a:canonical:ubuntu_linux:winbind, p-cpe:/a:canonical:ubuntu_linux:samba, p-cpe:/a:canonical:ubuntu_linux:libsmbclient-dev, p-cpe:/a:canonical:ubuntu_linux:smbfs, p-cpe:/a:canonical:ubuntu_linux:swat, p-cpe:/a:canonical:ubuntu_linux:samba-common, p-cpe:/a:canonical:ubuntu_linux:libsmbclient, cpe:/o:canonical:ubuntu_linux:4.10, p-cpe:/a:canonical:ubuntu_linux:libpam-smbpass, p-cpe:/a:canonical:ubuntu_linux:python2.3-samba

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

Patch Publication Date: 11/18/2004

Reference Information

CVE: CVE-2004-0882

USN: 29-1

Detections

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