Executive Summary



This Alert is flagged as TOP 25 Common Weakness Enumeration from CWE/SANS. For more information, you can read this.
Summary
Title rdesktop security update
Informations
Name RHSA-2011:0506 First vendor Publication 2011-05-11
Vendor RedHat Last vendor Modification 2011-05-11
Severity (Vendor) Moderate Revision 01

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score NA
Base Score NA Environmental Score NA
impact SubScore NA Temporal Score NA
Exploitabality Sub Score NA
 
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:A/AC:H/Au:N/C:P/I:P/A:P)
Cvss Base Score 4.3 Attack Range Adjacent network
Cvss Impact Score 6.4 Attack Complexity High
Cvss Expoit Score 3.2 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Problem Description:

An updated rdesktop package that fixes one security issue is now available for Red Hat Enterprise Linux 5 and 6.

The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Server (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64

3. Description:

rdesktop is a client for the Remote Desktop Server (previously, Terminal Server) in Microsoft Windows. It uses the Remote Desktop Protocol (RDP) to remotely present a user's desktop.

A directory traversal flaw was found in the way rdesktop shared a local path with a remote server. If a user connects to a malicious server with rdesktop, the server could use this flaw to cause rdesktop to read and write to arbitrary, local files accessible to the user running rdesktop. (CVE-2011-1595)

Red Hat would like to thank Cendio AB for reporting this issue. Cendio AB acknowledges an anonymous contributor working with the SecuriTeam Secure Disclosure program as the original reporter.

Users of rdesktop should upgrade to this updated package, which contains a backported patch to resolve this issue.

4. Solution:

Before applying this update, make sure all previously-released errata relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259

5. Bugs fixed (http://bugzilla.redhat.com/):

676252 - CVE-2011-1595 rdesktop remote file access

Original Source

Url : https://rhn.redhat.com/errata/RHSA-2011-0506.html

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (CWE/SANS Top 25)

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:13823
 
Oval ID: oval:org.mitre.oval:def:13823
Title: USN-1136-1 -- rdesktop vulnerability
Description: rdesktop: RDP client for Windows NT/2000 Terminal Server An attacker could access your files if rdesktop connected to a malicious server.
Family: unix Class: patch
Reference(s): USN-1136-1
CVE-2011-1595
Version: 5
Platform(s): Ubuntu 10.10
Ubuntu 10.04
Product(s): rdesktop
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:21920
 
Oval ID: oval:org.mitre.oval:def:21920
Title: RHSA-2011:0506: rdesktop security update (Moderate)
Description: Directory traversal vulnerability in the disk_create function in disk.c in rdesktop before 1.7.0, when disk redirection is enabled, allows remote RDP servers to read or overwrite arbitrary files via a .. (dot dot) in a pathname.
Family: unix Class: patch
Reference(s): RHSA-2011:0506-01
CVE-2011-1595
CESA-2011:0506-CentOS 5
Version: 6
Platform(s): Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 5
CentOS Linux 5
Product(s): rdesktop
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:23586
 
Oval ID: oval:org.mitre.oval:def:23586
Title: ELSA-2011:0506: rdesktop security update (Moderate)
Description: Directory traversal vulnerability in the disk_create function in disk.c in rdesktop before 1.7.0, when disk redirection is enabled, allows remote RDP servers to read or overwrite arbitrary files via a .. (dot dot) in a pathname.
Family: unix Class: patch
Reference(s): ELSA-2011:0506-01
CVE-2011-1595
Version: 6
Platform(s): Oracle Linux 6
Product(s): rdesktop
Definition Synopsis:
Definition Id: oval:org.mitre.oval:def:27640
 
Oval ID: oval:org.mitre.oval:def:27640
Title: DEPRECATED: ELSA-2011-0506 -- rdesktop security update (moderate)
Description: [1.6.0-8.1] - Prevent remote file access (#676252)
Family: unix Class: patch
Reference(s): ELSA-2011-0506
CVE-2011-1595
Version: 4
Platform(s): Oracle Linux 5
Oracle Linux 6
Product(s): rdesktop
Definition Synopsis:

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 8

OpenVAS Exploits

Date Description
2012-10-22 Name : Gentoo Security Advisory GLSA 201210-03 (rdesktop)
File : nvt/glsa_201210_03.nasl
2012-07-30 Name : CentOS Update for rdesktop CESA-2011:0506 centos5 x86_64
File : nvt/gb_CESA-2011_0506_rdesktop_centos5_x86_64.nasl
2011-08-09 Name : CentOS Update for rdesktop CESA-2011:0506 centos5 i386
File : nvt/gb_CESA-2011_0506_rdesktop_centos5_i386.nasl
2011-07-12 Name : Fedora Update for rdesktop FEDORA-2011-7688
File : nvt/gb_fedora_2011_7688_rdesktop_fc15.nasl
2011-06-10 Name : Fedora Update for rdesktop FEDORA-2011-7694
File : nvt/gb_fedora_2011_7694_rdesktop_fc13.nasl
2011-06-10 Name : Fedora Update for rdesktop FEDORA-2011-7697
File : nvt/gb_fedora_2011_7697_rdesktop_fc14.nasl
2011-06-03 Name : Mandriva Update for rdesktop MDVSA-2011:102 (rdesktop)
File : nvt/gb_mandriva_MDVSA_2011_102.nasl
2011-06-03 Name : Ubuntu Update for rdesktop USN-1136-1
File : nvt/gb_ubuntu_USN_1136_1.nasl
2011-05-17 Name : RedHat Update for rdesktop RHSA-2011:0506-01
File : nvt/gb_RHSA-2011_0506-01_rdesktop.nasl
0000-00-00 Name : Slackware Advisory SSA:2011-110-01 rdesktop
File : nvt/esoft_slk_ssa_2011_110_01.nasl

Open Source Vulnerability Database (OSVDB)

Id Description
72301 rdesktop Disk Redirection Traversal Arbitrary File Manipulation

rdesktop contains a flaw that allows a remote attacker to traverse outside of a restricted path. The issue is due to the disk redirection feature not properly sanitizing user input, specifically directory traversal style attacks (e.g., ../../). This directory traversal attack would allow the attacker to manipulate arbitrary files.

Nessus® Vulnerability Scanner

Date Description
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_3_rdesktop-110512.nasl - Type : ACT_GATHER_INFO
2014-06-13 Name : The remote openSUSE host is missing a security update.
File : suse_11_4_rdesktop-110512.nasl - Type : ACT_GATHER_INFO
2013-07-12 Name : The remote Oracle Linux host is missing a security update.
File : oraclelinux_ELSA-2011-0506.nasl - Type : ACT_GATHER_INFO
2012-10-19 Name : The remote Gentoo host is missing one or more security-related patches.
File : gentoo_GLSA-201210-03.nasl - Type : ACT_GATHER_INFO
2012-08-01 Name : The remote Scientific Linux host is missing a security update.
File : sl_20110511_rdesktop_on_SL5_x.nasl - Type : ACT_GATHER_INFO
2011-12-13 Name : The remote SuSE 10 host is missing a security-related patch.
File : suse_rdesktop-7525.nasl - Type : ACT_GATHER_INFO
2011-06-13 Name : The remote Ubuntu host is missing a security-related patch.
File : ubuntu_USN-1136-1.nasl - Type : ACT_GATHER_INFO
2011-06-09 Name : The remote Fedora host is missing a security update.
File : fedora_2011-7694.nasl - Type : ACT_GATHER_INFO
2011-06-09 Name : The remote Fedora host is missing a security update.
File : fedora_2011-7697.nasl - Type : ACT_GATHER_INFO
2011-06-06 Name : The remote Fedora host is missing a security update.
File : fedora_2011-7688.nasl - Type : ACT_GATHER_INFO
2011-05-31 Name : The remote Mandriva Linux host is missing a security update.
File : mandriva_MDVSA-2011-102.nasl - Type : ACT_GATHER_INFO
2011-05-25 Name : The remote SuSE 11 host is missing a security update.
File : suse_11_rdesktop-110512.nasl - Type : ACT_GATHER_INFO
2011-05-12 Name : The remote CentOS host is missing a security update.
File : centos_RHSA-2011-0506.nasl - Type : ACT_GATHER_INFO
2011-05-12 Name : The remote Red Hat host is missing one or more security updates.
File : redhat-RHSA-2011-0506.nasl - Type : ACT_GATHER_INFO
2011-04-22 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2011-110-01.nasl - Type : ACT_GATHER_INFO

Alert History

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0
Date Informations
2014-02-17 11:54:40
  • Multiple Updates