ID CVE-2008-4018
Summary swcons in bos.rte.console in IBM AIX 5.2.0 through 6.1.1 allows local users in the system group to create or overwrite an arbitrary file, and establish weak permissions and root ownership for this file, via unspecified vectors. NOTE: this can be leveraged to gain privileges. NOTE: this issue exists because of an incomplete fix for CVE-2007-5805.
References
Vulnerable Configurations
  • IBM AIX 5.2
    cpe:2.3:o:ibm:aix:5.2
  • IBM AIX 5.3
    cpe:2.3:o:ibm:aix:5.3
  • IBM AIX 6.1
    cpe:2.3:o:ibm:aix:6.1
CVSS
Base: 7.2 (as of 11-09-2008 - 19:51)
Impact:
Exploitability:
CWE CWE-264
CAPEC
  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.
  • Manipulating Input to File System Calls
    An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
Access
VectorComplexityAuthentication
LOCAL LOW NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
nessus via4
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ28943.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63773
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63773
    title AIX 6.1 TL 1 : swcons (IZ28943)
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ18338.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63760
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63760
    title AIX 5.3 TL 7 : swcons (IZ18338)
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ18341.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63762
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63762
    title AIX 6.1 TL 0 : swcons (IZ18341)
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ18335.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63759
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63759
    title AIX 5.2 TL 0 : swcons (IZ18335)
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ18339.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63761
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63761
    title AIX 5.3 TL 0 : swcons (IZ18339)
  • NASL family AIX Local Security Checks
    NASL id AIX_IZ18334.NASL
    description A file permission/ownership vulnerability exists in the 'bos.rte.console' fileset command listed below whereby a local attacker may create arbitrary contents within a file owned by root using the 'swcons' command. The local attacker must be a member of the 'system' group (gid=0) to execute this command. The following commands are vulnerable : /usr/sbin/swcons.
    last seen 2019-02-21
    modified 2013-03-11
    plugin id 63758
    published 2013-01-24
    reporter Tenable
    source https://www.tenable.com/plugins/index.php?view=single&id=63758
    title AIX 5.3 TL 8 : swcons (IZ18334)
oval via4
accepted 2008-10-27T04:00:24.414-04:00
class vulnerability
contributors
name Michael Wood
organization Hewlett-Packard
definition_extensions
  • comment IBM AIX 5.2 is installed
    oval oval:org.mitre.oval:def:5189
  • comment IBM AIX 5.3 is installed
    oval oval:org.mitre.oval:def:5325
  • comment IBM AIX 6.1 is installed
    oval oval:org.mitre.oval:def:5267
description swcons in bos.rte.console in IBM AIX 5.2.0 through 6.1.1 allows local users in the system group to create or overwrite an arbitrary file, and establish weak permissions and root ownership for this file, via unspecified vectors. NOTE: this can be leveraged to gain privileges. NOTE: this issue exists because of an incomplete fix for CVE-2007-5805.
family unix
id oval:org.mitre.oval:def:5932
status accepted
submitted 2008-09-16T15:10:44.000-05:00
title IBM AIX 'swcons' Insecure File Creation Vulnerability
version 43
refmap via4
aixapar
  • IZ18334
  • IZ18335
  • IZ18338
  • IZ18339
  • IZ18341
  • IZ28943
bid 30999
confirm http://aix.software.ibm.com/aix/efixes/security/swcons_advisory.asc
sectrack 1020818
secunia 31739
vupen ADV-2008-2490
xf ibm-aix-swcons-code-execution(44903)
Last major update 07-03-2011 - 22:11
Published 10-09-2008 - 21:13
Last modified 28-09-2017 - 21:31
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