Vulnerabilities > CVE-2005-0244 - Permissions, Privileges, and Access Controls vulnerability in Postgresql
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
PostgreSQL 8.0.0 and earlier allows local users to bypass the EXECUTE permission check for functions by using the CREATE AGGREGATE command.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (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.
Nessus
NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2005-138.NASL description Updated postresql packages that correct various security issues are now available for Red Hat Enterprise Linux 4. This update has been rated as having important security impact by the Red Hat Security Response Team. A flaw in the LOAD command in PostgreSQL was discovered. A local user could use this flaw to load arbitrary shared libraries and therefore execute arbitrary code, gaining the privileges of the PostgreSQL server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0227 to this issue. A permission checking flaw in PostgreSQL was discovered. A local user could bypass the EXECUTE permission check for functions by using the CREATE AGGREGATE command. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0244 to this issue. Multiple buffer overflows were found in PL/PgSQL. A database user who has permissions to create plpgsql functions could trigger this flaw which could lead to arbitrary code execution, gaining the privileges of the PostgreSQL server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-0245 and CVE-2005-0247 to these issues. A flaw in the integer aggregator (intagg) contrib module for PostgreSQL was found. A user could create carefully crafted arrays and cause a denial of service (crash). The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0246 to this issue. The update also fixes some minor problems, notably conflicts with SELinux. Users of postgresql should update to these erratum packages that contain patches and are not vulnerable to these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 17192 published 2005-02-22 reporter This script is Copyright (C) 2005-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/17192 title RHEL 4 : postgresql (RHSA-2005:138) NASL family Databases NASL id POSTGRESQL_MULTIPLE_FLAWS2.NASL description The remote PostgreSQL server, according to its version number, is vulnerable to multiple flaws that could allow an attacker who has the rights to query the remote database to obtain a shell on this host. last seen 2020-06-01 modified 2020-06-02 plugin id 16309 published 2005-02-03 reporter This script is Copyright (C) 2005-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/16309 title PostgreSQL < 7.2.7 / 7.3.9 / 7.4.7 / 8.0.1 Multiple Vulnerabilities NASL family Red Hat Local Security Checks NASL id REDHAT-RHSA-2005-141.NASL description Updated PostgreSQL packages to fix various security flaws are now available for Red Hat Enterprise Linux 3. PostgreSQL is an advanced Object-Relational database management system (DBMS). A flaw in the LOAD command in PostgreSQL was discovered. A local user could use this flaw to load arbitrary shared librarys and therefore execute arbitrary code, gaining the privileges of the PostgreSQL server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0227 to this issue. A permission checking flaw in PostgreSQL was discovered. A local user could bypass the EXECUTE permission check for functions by using the CREATE AGGREGATE command. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0244 to this issue. Multiple buffer overflows were found in PL/PgSQL. A database user who has permissions to create plpgsql functions could trigger this flaw which could lead to arbitrary code execution, gaining the privileges of the PostgreSQL server. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the names CVE-2005-0245 and CVE-2005-0247 to these issues. A flaw in the integer aggregator (intagg) contrib module for PostgreSQL was found. A user could create carefully crafted arrays and cause a denial of service (crash). The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2005-0246 to this issue. Users of PostgreSQL are advised to update to these erratum packages which are not vulnerable to these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 16386 published 2005-02-14 reporter This script is Copyright (C) 2005-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/16386 title RHEL 3 : rh-postgresql (RHSA-2005:141) NASL family Mandriva Local Security Checks NASL id MANDRAKE_MDKSA-2005-040.NASL description A number of vulnerabilities were found and corrected in the PostgreSQL DBMS : A flaw in the LOAD command could be abused by a local user to load arbitrary shared libraries and as a result execute arbitrary code with the privileges of the user running the postgresql server (CVE-2005-0227). A permission checking flaw was found where a local user could bypass the EXECUTE permission check for functions using the CREATE AGGREGATE command (CVE-2005-0244). Multiple buffer overflows were discovered in PL/PgSQL. A database user with permission to create plpgsql functions could trigger these flaws which could then lead to arbitrary code execution with the privileges of the user running the postgresql server (CVE-2005-0245 and CVE-2005-0247). Finally, a flaw in the integer aggregator (intagg) contrib module was found. A user could create carefully crafted arrays and crash the server, causing a Denial of Service (CVE-2005-0246). The updated packages have been patched to correct these problems. last seen 2020-06-01 modified 2020-06-02 plugin id 17139 published 2005-02-18 reporter This script is Copyright (C) 2005-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/17139 title Mandrake Linux Security Advisory : postgresql (MDKSA-2005:040) NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_65C8ECF92ADB11DBA6E2000E0C2E438A.NASL description Multiple vulnerabilities had been reported in various versions of PostgreSQL : - The EXECUTE restrictions can be bypassed by using the AGGREGATE function, which is missing a permissions check. - A buffer overflow exists in gram.y which could allow an attacker to execute arbitrary code by sending a large number of arguments to a refcursor function, found in gram.y - The intagg contributed module allows an attacker to crash the server (Denial of Service) by constructing a malicious crafted array. last seen 2020-06-01 modified 2020-06-02 plugin id 22210 published 2006-08-14 reporter This script is Copyright (C) 2006-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/22210 title FreeBSD : postgresql -- multiple vulnerabilities (65c8ecf9-2adb-11db-a6e2-000e0c2e438a) NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-200502-08.NASL description The remote host is affected by the vulnerability described in GLSA-200502-08 (PostgreSQL: Multiple vulnerabilities) PostgreSQL last seen 2020-06-01 modified 2020-06-02 plugin id 16445 published 2005-02-14 reporter This script is Copyright (C) 2005-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/16445 title GLSA-200502-08 : PostgreSQL: Multiple vulnerabilities NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-79-1.NASL description The execution of custom PostgreSQL functions can be restricted with the EXECUTE privilege. However, previous versions did not check this privilege when executing a function which was part of an aggregate. As a result, any database user could circumvent the EXECUTE restriction of functions with a particular (but very common) parameter structure by creating an aggregate wrapper around the function. (CAN-2005-0244) Several buffer overflows have been discovered in the SQL parser. These could be exploited by any database user to crash the PostgreSQL server or execute arbitrary code with the privileges of the server. (CAN-2005-0245, CAN-2005-0247) Finally, this update fixes a Denial of Service vulnerability of the contributed last seen 2020-06-01 modified 2020-06-02 plugin id 20702 published 2006-01-15 reporter Ubuntu Security Notice (C) 2005-2019 Canonical, Inc. / NASL script (C) 2006-2016 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/20702 title Ubuntu 4.10 : postgresql vulnerabilities (USN-79-1)
Oval
accepted | 2013-04-29T04:10:01.250-04:00 | ||||||||||||||||||||
class | vulnerability | ||||||||||||||||||||
contributors |
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definition_extensions |
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description | PostgreSQL 8.0.0 and earlier allows local users to bypass the EXECUTE permission check for functions by using the CREATE AGGREGATE command. | ||||||||||||||||||||
family | unix | ||||||||||||||||||||
id | oval:org.mitre.oval:def:10927 | ||||||||||||||||||||
status | accepted | ||||||||||||||||||||
submitted | 2010-07-09T03:56:16-04:00 | ||||||||||||||||||||
title | Buffer overflow in the readline function in util/texindex.c, as used by the (1) texi2dvi and (2) texindex commands, in texinfo 4.8 and earlier allows local users to execute arbitrary code via a crafted Texinfo file. | ||||||||||||||||||||
version | 26 |
Redhat
advisories |
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rpms |
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References
- http://archives.postgresql.org/pgsql-hackers/2005-01/msg00922.php
- http://www.redhat.com/support/errata/RHSA-2005-138.html
- http://secunia.com/advisories/12948
- http://www.novell.com/linux/security/advisories/2005_36_sudo.html
- http://www.securityfocus.com/bid/12417
- http://www.mandriva.com/security/advisories?name=MDKSA-2005:040
- http://marc.info/?l=bugtraq&m=110806034116082&w=2
- https://exchange.xforce.ibmcloud.com/vulnerabilities/19184
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10927