Vulnerabilities > CVE-2009-0873 - Permissions, Privileges, and Access Controls vulnerability in SUN Opensolaris
Attack vector
UNKNOWN Attack complexity
UNKNOWN Privileges required
UNKNOWN Confidentiality impact
UNKNOWN Integrity impact
UNKNOWN Availability impact
UNKNOWN Summary
The NFS daemon (aka nfsd) in Sun Solaris 10 and OpenSolaris before snv_106, when NFSv3 is used, does not properly implement combinations of security modes, which allows remote attackers to bypass intended access restrictions and read or modify files, as demonstrated by a combination of the sec=sys and sec=krb5 security modes, related to modes that "override each other."
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 Solaris Local Security Checks NASL id SOLARIS10_139462-02.NASL description SunOS 5.10: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09 last seen 2020-06-01 modified 2020-06-02 plugin id 107514 published 2018-03-12 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/107514 title Solaris 10 (sparc) : 139462-02 code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text in this plugin was # extracted from the Oracle SunOS Patch Updates. # include("compat.inc"); if (description) { script_id(107514); script_version("1.6"); script_cvs_date("Date: 2019/10/25 13:36:25"); script_cve_id("CVE-2009-0870", "CVE-2009-0872", "CVE-2009-0873"); script_name(english:"Solaris 10 (sparc) : 139462-02"); script_summary(english:"Check for patch 139462-02"); script_set_attribute( attribute:"synopsis", value:"The remote host is missing Sun Security Patch number 139462-02" ); script_set_attribute( attribute:"description", value: "SunOS 5.10: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09" ); script_set_attribute( attribute:"see_also", value:"https://download.oracle.com/sunalerts/1020173.1.html" ); script_set_attribute(attribute:"solution", value:"Install patch 139462-02"); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); script_cwe_id(264, 399); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:oracle:solaris:10:139462"); script_set_attribute(attribute:"cpe", value:"cpe:/o:oracle:solaris:10"); script_set_attribute(attribute:"patch_publication_date", value:"2009/03/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/03/12"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Solaris Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Solaris/showrev"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("solaris.inc"); showrev = get_kb_item("Host/Solaris/showrev"); if (empty_or_null(showrev)) audit(AUDIT_OS_NOT, "Solaris"); os_ver = pregmatch(pattern:"Release: (\d+.(\d+))", string:showrev); if (empty_or_null(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Solaris"); full_ver = os_ver[1]; os_level = os_ver[2]; if (full_ver != "5.10") audit(AUDIT_OS_NOT, "Solaris 10", "Solaris " + os_level); package_arch = pregmatch(pattern:"Application architecture: (\w+)", string:showrev); if (empty_or_null(package_arch)) audit(AUDIT_UNKNOWN_ARCH); package_arch = package_arch[1]; if (package_arch != "sparc") audit(AUDIT_ARCH_NOT, "sparc", package_arch); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (solaris_check_patch(release:"5.10", arch:"sparc", patch:"139462-02", obsoleted_by:"141444-09 139991-02 141733-02 141414-09 ", package:"SUNWnfsskr", version:"11.10.0,REV=2005.01.21.15.53") < 0) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_WARNING, extra : solaris_get_report() ); } else { patch_fix = solaris_patch_fix_get(); if (!empty_or_null(patch_fix)) audit(AUDIT_PATCH_INSTALLED, patch_fix, "Solaris 10"); tested = solaris_pkg_tests_get(); if (!empty_or_null(tested)) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); audit(AUDIT_PACKAGE_NOT_INSTALLED, "SUNWnfsskr"); }
NASL family Solaris Local Security Checks NASL id SOLARIS10_X86_139463.NASL description SunOS 5.10_x86: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09 last seen 2018-09-02 modified 2018-08-13 plugin id 36795 published 2009-04-23 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=36795 title Solaris 10 (x86) : 139463-02 code #%NASL_MIN_LEVEL 80502 # @DEPRECATED@ # # This script has been deprecated as the associated patch is not # currently a recommended security fix. # # Disabled on 2011/10/24. # # # (C) Tenable Network Security, Inc. # # if ( ! defined_func("bn_random") ) exit(0); include("compat.inc"); if(description) { script_id(36795); script_version("1.17"); script_name(english: "Solaris 10 (x86) : 139463-02"); script_cve_id("CVE-2009-0870", "CVE-2009-0872", "CVE-2009-0873"); script_set_attribute(attribute: "synopsis", value: "The remote host is missing Sun Security Patch number 139463-02"); script_set_attribute(attribute: "description", value: 'SunOS 5.10_x86: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09'); script_set_attribute(attribute: "solution", value: "You should install this patch for your system to be up-to-date."); script_set_attribute(attribute: "see_also", value: "http://download.oracle.com/sunalerts/1020173.1.html"); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P"); script_cwe_id(264); script_set_attribute(attribute:"plugin_publication_date", value: "2009/04/23"); script_cvs_date("Date: 2019/10/25 13:36:25"); script_end_attributes(); script_summary(english: "Check for patch 139463-02"); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2009-2019 Tenable Network Security, Inc."); family["english"] = "Solaris Local Security Checks"; script_family(english:family["english"]); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/Solaris/showrev"); exit(0); } # Deprecated. exit(0, "The associated patch is not currently a recommended security fix.");
NASL family Solaris Local Security Checks NASL id SOLARIS10_139462.NASL description SunOS 5.10: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09 last seen 2018-09-02 modified 2018-08-13 plugin id 36339 published 2009-04-23 reporter Tenable source https://www.tenable.com/plugins/index.php?view=single&id=36339 title Solaris 10 (sparc) : 139462-02 NASL family Solaris Local Security Checks NASL id SOLARIS10_X86_139463-02.NASL description SunOS 5.10_x86: nfssrv patch. Date this patch was last updated by Sun : Mar/05/09 last seen 2020-06-01 modified 2020-06-02 plugin id 108011 published 2018-03-12 reporter This script is Copyright (C) 2018-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/108011 title Solaris 10 (x86) : 139463-02
Seebug
bulletinFamily | exploit |
description | BUGTRAQ ID: 34062 CVE(CAN) ID: CVE-2009-0873 Solaris是一款由Sun开发和维护的商业UNIX操作系统。 Solaris的NFS守护程序(nfsd)没有正确地实现多种安全模式组合,远程攻击者可以利用sec=sys和sec=krb5安全模式组合绕过预期的访问限制,读取或修改受限制的文件。 Sun Solaris 10.0_x86 Sun Solaris 10.0 Sun OpenSolaris snv_01 - snv_105 临时解决方法: * 对NFS服务器所支持的安全模式使用相同的访问列表。 * 编辑/etc/default/nfs并将NFS_SERVER_VERSMIN更改为4,仅允许NFSv4通讯到达服务器: NFS_SERVER_VERSMIN=4 然后使用以下命令重启nfs服务器: $ svcadm restart svc:/network/nfs/server 厂商补丁: Sun --- Sun已经为此发布了一个安全公告(Sun-Alert-250306)以及相应补丁: Sun-Alert-250306:A Security Vulnerability in the Solaris NFS Daemon (nfsd(1M)) May Allow Unauthorized Access to Data 链接:<a href=http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-250306-1 target=_blank rel=external nofollow>http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-250306-1</a> |
id | SSV:4906 |
last seen | 2017-11-19 |
modified | 2009-03-14 |
published | 2009-03-14 |
reporter | Root |
title | Sun Solaris NFS守护程序绕过安全限制漏洞 |
References
- http://osvdb.org/52560
- http://osvdb.org/52560
- http://secunia.com/advisories/34225
- http://secunia.com/advisories/34225
- http://secunia.com/advisories/34435
- http://secunia.com/advisories/34435
- http://securitytracker.com/id?1021832
- http://securitytracker.com/id?1021832
- http://sunsolve.sun.com/search/document.do?assetkey=1-21-139462-02-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-21-139462-02-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-250306-1
- http://sunsolve.sun.com/search/document.do?assetkey=1-66-250306-1
- http://support.avaya.com/elmodocs2/security/ASA-2009-096.htm
- http://support.avaya.com/elmodocs2/security/ASA-2009-096.htm
- http://www.securityfocus.com/bid/34062
- http://www.securityfocus.com/bid/34062
- http://www.vupen.com/english/advisories/2009/0657
- http://www.vupen.com/english/advisories/2009/0657
- http://www.vupen.com/english/advisories/2009/0814
- http://www.vupen.com/english/advisories/2009/0814
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49171
- https://exchange.xforce.ibmcloud.com/vulnerabilities/49171