Vulnerabilities > CVE-2009-1756 - Information Exposure vulnerability in Simone Rota Slim Simple Login Manager 1.3.0
Attack vector
LOCAL Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
NONE Availability impact
NONE Summary
SLiM Simple Login Manager 1.3.0 places the X authority magic cookie (mcookie) on the command line when invoking xauth from (1) app.cpp and (2) switchuser.cpp, which allows local users to access the X session by listing the process and its arguments.
Vulnerable Configurations
Part | Description | Count |
---|---|---|
Application | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
- Footprinting An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
- Exploiting Trust in Client (aka Make the Client Invisible) An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
- Browser Fingerprinting An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
- Session Credential Falsification through Prediction This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.
Nessus
NASL family FreeBSD Local Security Checks NASL id FREEBSD_PKG_80F138844D4C11DE88110030843D3802.NASL description Secunia reports : A security issue has been reported in SLiM, which can be exploited by malicious, local users to disclose sensitive information. The security issue is caused due to the application generating the X authority file by passing the X authority cookie via the command line to last seen 2020-06-01 modified 2020-06-02 plugin id 38965 published 2009-06-01 reporter This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/38965 title FreeBSD : slim -- local disclosure of X authority magic cookie (80f13884-4d4c-11de-8811-0030843d3802) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from the FreeBSD VuXML database : # # Copyright 2003-2018 Jacques Vidrine and contributors # # Redistribution and use in source (VuXML) and 'compiled' forms (SGML, # HTML, PDF, PostScript, RTF and so forth) with or without modification, # are permitted provided that the following conditions are met: # 1. Redistributions of source code (VuXML) must retain the above # copyright notice, this list of conditions and the following # disclaimer as the first lines of this file unmodified. # 2. Redistributions in compiled form (transformed to other DTDs, # published online in any format, converted to PDF, PostScript, # RTF and other formats) must reproduce the above copyright # notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # # THIS DOCUMENTATION IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, # OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT # OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR # BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, # WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE # OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS DOCUMENTATION, # EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # include("compat.inc"); if (description) { script_id(38965); script_version("1.12"); script_cvs_date("Date: 2019/08/02 13:32:40"); script_cve_id("CVE-2009-1756"); script_bugtraq_id(35015); script_name(english:"FreeBSD : slim -- local disclosure of X authority magic cookie (80f13884-4d4c-11de-8811-0030843d3802)"); script_summary(english:"Checks for updated package in pkg_info output"); script_set_attribute( attribute:"synopsis", value:"The remote FreeBSD host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "Secunia reports : A security issue has been reported in SLiM, which can be exploited by malicious, local users to disclose sensitive information. The security issue is caused due to the application generating the X authority file by passing the X authority cookie via the command line to 'xauth'. This can be exploited to disclose the X authority cookie by consulting the process list and e.g. gain access the user's display." ); # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529306 script_set_attribute( attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529306" ); # https://vuxml.freebsd.org/freebsd/80f13884-4d4c-11de-8811-0030843d3802.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?0b2b676b" ); script_set_attribute(attribute:"solution", value:"Update the affected package."); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:ND/RL:U/RC:ND"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_cwe_id(200); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:freebsd:freebsd:slim"); script_set_attribute(attribute:"cpe", value:"cpe:/o:freebsd:freebsd"); script_set_attribute(attribute:"vuln_publication_date", value:"2009/05/20"); script_set_attribute(attribute:"patch_publication_date", value:"2009/05/30"); script_set_attribute(attribute:"plugin_publication_date", value:"2009/06/01"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"FreeBSD Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/FreeBSD/release", "Host/FreeBSD/pkg_info"); exit(0); } include("audit.inc"); include("freebsd_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/FreeBSD/release")) audit(AUDIT_OS_NOT, "FreeBSD"); if (!get_kb_item("Host/FreeBSD/pkg_info")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (pkg_test(save_report:TRUE, pkg:"slim<1.3.1_3")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:pkg_report_get()); else security_note(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Fedora Local Security Checks NASL id FEDORA_2009-13552.NASL description - Tue Dec 22 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-9 - Fix CVE-2009-1756 (bugzilla: 544024) - Fix MIT insecure cookie generation (patch from Debian) - Fix build with GCC 4.4 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 44882 published 2010-02-25 reporter This script is Copyright (C) 2010-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/44882 title Fedora 12 : slim-1.3.1-9.fc12 (2009-13552) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2009-13552. # include("compat.inc"); if (description) { script_id(44882); script_version("1.11"); script_cvs_date("Date: 2019/08/02 13:32:29"); script_cve_id("CVE-2009-1756"); script_xref(name:"FEDORA", value:"2009-13552"); script_name(english:"Fedora 12 : slim-1.3.1-9.fc12 (2009-13552)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Tue Dec 22 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-9 - Fix CVE-2009-1756 (bugzilla: 544024) - Fix MIT insecure cookie generation (patch from Debian) - Fix build with GCC 4.4 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=501562" ); # https://lists.fedoraproject.org/pipermail/package-announce/2010-January/033332.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?9cbc37fe" ); script_set_attribute(attribute:"solution", value:"Update the affected slim package."); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N"); script_cwe_id(200); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:slim"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:12"); script_set_attribute(attribute:"patch_publication_date", value:"2009/12/22"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/02/25"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2010-2019 Tenable Network Security, Inc."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^12([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 12.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC12", reference:"slim-1.3.1-9.fc12")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "slim"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2009-13551.NASL description - Tue Dec 22 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-9 - Fix CVE-2009-1756 (bugzilla: 544024) - Fix MIT insecure cookie generation (patch from Debian) - Fix build with GCC 4.4 - Sat Oct 10 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-8 - Fix BZ #518068 - Sun Jul 26 2009 Fedora Release Engineering <rel-eng at lists.fedoraproject.org> - 1.3.1-7 - Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild - Sun Jun 21 2009 Anders F Bjorklund <afb at users.sourceforge.net> 1.3.1-6 - exclude current directory from default_path in slim.conf (#505359) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 44881 published 2010-02-25 reporter This script is Copyright (C) 2010-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/44881 title Fedora 11 : slim-1.3.1-9.fc11 (2009-13551) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory 2009-13551. # include("compat.inc"); if (description) { script_id(44881); script_version("1.11"); script_cvs_date("Date: 2019/08/02 13:32:29"); script_cve_id("CVE-2009-1756"); script_xref(name:"FEDORA", value:"2009-13551"); script_name(english:"Fedora 11 : slim-1.3.1-9.fc11 (2009-13551)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: " - Tue Dec 22 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-9 - Fix CVE-2009-1756 (bugzilla: 544024) - Fix MIT insecure cookie generation (patch from Debian) - Fix build with GCC 4.4 - Sat Oct 10 2009 Lorenzo Villani <lvillani at binaryhelix.net> - 1.3.1-8 - Fix BZ #518068 - Sun Jul 26 2009 Fedora Release Engineering <rel-eng at lists.fedoraproject.org> - 1.3.1-7 - Rebuilt for https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild - Sun Jun 21 2009 Anders F Bjorklund <afb at users.sourceforge.net> 1.3.1-6 - exclude current directory from default_path in slim.conf (#505359) Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues." ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.redhat.com/show_bug.cgi?id=501562" ); script_set_attribute( attribute:"see_also", value:"https://fedoraproject.org/wiki/Fedora_12_Mass_Rebuild" ); # https://lists.fedoraproject.org/pipermail/package-announce/2010-January/033323.html script_set_attribute( attribute:"see_also", value:"http://www.nessus.org/u?82c010db" ); script_set_attribute(attribute:"solution", value:"Update the affected slim package."); script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:N"); script_cwe_id(200); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:slim"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:11"); script_set_attribute(attribute:"patch_publication_date", value:"2009/12/22"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/02/25"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2010-2019 Tenable Network Security, Inc."); script_family(english:"Fedora Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("rpm.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/RedHat/release"); if (isnull(release) || "Fedora" >!< release) audit(AUDIT_OS_NOT, "Fedora"); os_ver = eregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! ereg(pattern:"^11([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 11.x", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC11", reference:"slim-1.3.1-9.fc11")) flag++; if (flag) { if (report_verbosity > 0) security_note(port:0, extra:rpm_report_get()); else security_note(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "slim"); }
References
- http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=529306
- http://osvdb.org/54583
- http://secunia.com/advisories/35132
- http://secunia.com/advisories/38070
- http://www.openwall.com/lists/oss-security/2009/05/18/2
- http://www.securityfocus.com/bid/35015
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50611
- https://www.redhat.com/archives/fedora-package-announce/2010-January/msg00000.html
- https://www.redhat.com/archives/fedora-package-announce/2010-January/msg00009.html