Vulnerabilities > CVE-2008-4810 - Code Injection vulnerability in Smarty
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
The _expand_quoted_text function in libs/Smarty_Compiler.class.php in Smarty 2.6.20 before r2797 allows remote attackers to execute arbitrary PHP code via vectors related to templates and (1) a dollar-sign character, aka "php executed in templates;" and (2) a double quoted literal string, aka a "function injection security hole." NOTE: each vector affects slightly different SVN revisions.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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.
- Manipulating User-Controlled Variables This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.
Nessus
NASL family Gentoo Local Security Checks NASL id GENTOO_GLSA-201006-13.NASL description The remote host is affected by the vulnerability described in GLSA-201006-13 (Smarty: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Smarty: The vendor reported that the modifier.regex_replace.php plug-in contains an input sanitation flaw related to the ASCII NUL character (CVE-2008-1066). The vendor reported that the _expand_quoted_text() function in libs/Smarty_Compiler.class.php contains an input sanitation flaw via multiple vectors (CVE-2008-4810, CVE-2008-4811). Nine:Situations:Group::bookoo reported that the smarty_function_math() function in libs/plugins/function.math.php contains input sanitation flaw (CVE-2009-1669). Impact : These issues might allow a remote attacker to execute arbitrary PHP code. Workaround : There is no known workaround at this time. last seen 2020-06-01 modified 2020-06-02 plugin id 46793 published 2010-06-03 reporter This script is Copyright (C) 2010-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/46793 title GLSA-201006-13 : Smarty: Multiple vulnerabilities code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Gentoo Linux Security Advisory GLSA 201006-13. # # The advisory text is Copyright (C) 2001-2016 Gentoo Foundation, Inc. # and licensed under the Creative Commons - Attribution / Share Alike # license. See http://creativecommons.org/licenses/by-sa/3.0/ # include("compat.inc"); if (description) { script_id(46793); script_version("1.11"); script_cvs_date("Date: 2019/08/02 13:32:45"); script_cve_id("CVE-2008-1066", "CVE-2008-4810", "CVE-2008-4811", "CVE-2009-1669"); script_bugtraq_id(28105, 31862, 34918); script_xref(name:"GLSA", value:"201006-13"); script_name(english:"GLSA-201006-13 : Smarty: Multiple vulnerabilities"); script_summary(english:"Checks for updated package(s) in /var/db/pkg"); script_set_attribute( attribute:"synopsis", value: "The remote Gentoo host is missing one or more security-related patches." ); script_set_attribute( attribute:"description", value: "The remote host is affected by the vulnerability described in GLSA-201006-13 (Smarty: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in Smarty: The vendor reported that the modifier.regex_replace.php plug-in contains an input sanitation flaw related to the ASCII NUL character (CVE-2008-1066). The vendor reported that the _expand_quoted_text() function in libs/Smarty_Compiler.class.php contains an input sanitation flaw via multiple vectors (CVE-2008-4810, CVE-2008-4811). Nine:Situations:Group::bookoo reported that the smarty_function_math() function in libs/plugins/function.math.php contains input sanitation flaw (CVE-2009-1669). Impact : These issues might allow a remote attacker to execute arbitrary PHP code. Workaround : There is no known workaround at this time." ); script_set_attribute( attribute:"see_also", value:"https://security.gentoo.org/glsa/201006-13" ); script_set_attribute( attribute:"solution", value: "All Smarty users should upgrade to an unaffected version: # emerge --sync # emerge --ask --oneshot --verbose '>=dev-php/smarty-2.6.23' NOTE: This is a legacy GLSA. Updates for all affected architectures are available since June 2, 2009. It is likely that your system is already no longer affected by this issue." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_cwe_id(20, 94, 264); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:gentoo:linux:smarty"); script_set_attribute(attribute:"cpe", value:"cpe:/o:gentoo:linux"); script_set_attribute(attribute:"patch_publication_date", value:"2010/06/02"); script_set_attribute(attribute:"plugin_publication_date", value:"2010/06/03"); 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:"Gentoo Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Gentoo/release", "Host/Gentoo/qpkg-list"); exit(0); } include("audit.inc"); include("global_settings.inc"); include("qpkg.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Gentoo/release")) audit(AUDIT_OS_NOT, "Gentoo"); if (!get_kb_item("Host/Gentoo/qpkg-list")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (qpkg_check(package:"dev-php/smarty", unaffected:make_list("ge 2.6.23"), vulnerable:make_list("lt 2.6.23"))) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:qpkg_report_get()); else security_hole(0); exit(0); } else { tested = qpkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "Smarty"); }
NASL family Ubuntu Local Security Checks NASL id UBUNTU_USN-791-1.NASL description Thor Larholm discovered that PHPMailer, as used by Moodle, did not correctly escape email addresses. A local attacker with direct access to the Moodle database could exploit this to execute arbitrary commands as the web server user. (CVE-2007-3215) Nigel McNie discovered that fetching https URLs did not correctly escape shell meta-characters. An authenticated remote attacker could execute arbitrary commands as the web server user, if curl was installed and configured. (CVE-2008-4796, MSA-09-0003) It was discovered that Smarty (also included in Moodle), did not correctly filter certain inputs. An authenticated remote attacker could exploit this to execute arbitrary PHP commands as the web server user. (CVE-2008-4810, CVE-2008-4811, CVE-2009-1669) It was discovered that the unused SpellChecker extension in Moodle did not correctly handle temporary files. If the tool had been locally modified, it could be made to overwrite arbitrary local files via symlinks. (CVE-2008-5153) Mike Churchward discovered that Moodle did not correctly filter Wiki page titles in certain areas. An authenticated remote attacker could exploit this to cause cross-site scripting (XSS), which could be used to modify or steal confidential data of other users within the same web domain. (CVE-2008-5432, MSA-08-0022) It was discovered that the HTML sanitizer, last seen 2020-06-01 modified 2020-06-02 plugin id 39516 published 2009-06-25 reporter Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/39516 title Ubuntu 8.04 LTS / 8.10 : moodle vulnerabilities (USN-791-1) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Ubuntu Security Notice USN-791-1. The text # itself is copyright (C) Canonical, Inc. See # <http://www.ubuntu.com/usn/>. Ubuntu(R) is a registered # trademark of Canonical, Inc. # include("compat.inc"); if (description) { script_id(39516); script_version("1.23"); script_cvs_date("Date: 2019/08/02 13:33:02"); script_cve_id("CVE-2007-3215", "CVE-2008-4796", "CVE-2008-4810", "CVE-2008-4811", "CVE-2008-5153", "CVE-2008-5432", "CVE-2008-5619", "CVE-2008-6124", "CVE-2009-0499", "CVE-2009-0500", "CVE-2009-0501", "CVE-2009-0502", "CVE-2009-1171", "CVE-2009-1669"); script_bugtraq_id(31862, 31887, 32402, 32799, 33610, 33612, 34278, 34918); script_xref(name:"USN", value:"791-1"); script_name(english:"Ubuntu 8.04 LTS / 8.10 : moodle vulnerabilities (USN-791-1)"); script_summary(english:"Checks dpkg output for updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Ubuntu host is missing a security-related patch." ); script_set_attribute( attribute:"description", value: "Thor Larholm discovered that PHPMailer, as used by Moodle, did not correctly escape email addresses. A local attacker with direct access to the Moodle database could exploit this to execute arbitrary commands as the web server user. (CVE-2007-3215) Nigel McNie discovered that fetching https URLs did not correctly escape shell meta-characters. An authenticated remote attacker could execute arbitrary commands as the web server user, if curl was installed and configured. (CVE-2008-4796, MSA-09-0003) It was discovered that Smarty (also included in Moodle), did not correctly filter certain inputs. An authenticated remote attacker could exploit this to execute arbitrary PHP commands as the web server user. (CVE-2008-4810, CVE-2008-4811, CVE-2009-1669) It was discovered that the unused SpellChecker extension in Moodle did not correctly handle temporary files. If the tool had been locally modified, it could be made to overwrite arbitrary local files via symlinks. (CVE-2008-5153) Mike Churchward discovered that Moodle did not correctly filter Wiki page titles in certain areas. An authenticated remote attacker could exploit this to cause cross-site scripting (XSS), which could be used to modify or steal confidential data of other users within the same web domain. (CVE-2008-5432, MSA-08-0022) It was discovered that the HTML sanitizer, 'Login as' feature, and logging in Moodle did not correctly handle certain inputs. An authenticated remote attacker could exploit this to generate XSS, which could be used to modify or steal confidential data of other users within the same web domain. (CVE-2008-5619, CVE-2009-0500, CVE-2009-0502, MSA-08-0026, MSA-09-0004, MSA-09-0007) It was discovered that the HotPot module in Moodle did not correctly filter SQL inputs. An authenticated remote attacker could execute arbitrary SQL commands as the moodle database user, leading to a loss of privacy or denial of service. (CVE-2008-6124, MSA-08-0010) Kevin Madura discovered that the forum actions and messaging settings in Moodle were not protected from cross-site request forgery (CSRF). If an authenticated user were tricked into visiting a malicious website while logged into Moodle, a remote attacker could change the user's configurations or forum content. (CVE-2009-0499, MSA-09-0008, MSA-08-0023) Daniel Cabezas discovered that Moodle would leak usernames from the Calendar Export tool. A remote attacker could gather a list of users, leading to a loss of privacy. (CVE-2009-0501, MSA-09-0006) Christian Eibl discovered that the TeX filter in Moodle allowed any function to be used. An authenticated remote attacker could post a specially crafted TeX formula to execute arbitrary TeX functions, potentially reading any file accessible to the web server user, leading to a loss of privacy. (CVE-2009-1171, MSA-09-0009) Johannes Kuhn discovered that Moodle did not correctly validate user permissions when attempting to switch user accounts. An authenticated remote attacker could switch to any other Moodle user, leading to a loss of privacy. (MSA-08-0003) Hanno Boeck discovered that unconfigured Moodle instances contained XSS vulnerabilities. An unauthenticated remote attacker could exploit this to modify or steal confidential data of other users within the same web domain. (MSA-08-0004) Debbie McDonald, Mauno Korpelainen, Howard Miller, and Juan Segarra Montesinos discovered that when users were deleted from Moodle, their profiles and avatars were still visible. An authenticated remote attacker could exploit this to store information in profiles even after they were removed, leading to spam traffic. (MSA-08-0015, MSA-09-0001, MSA-09-0002) Lars Vogdt discovered that Moodle did not correctly filter certain inputs. An authenticated remote attacker could exploit this to generate XSS from which they could modify or steal confidential data of other users within the same web domain. (MSA-08-0021) It was discovered that Moodle did not correctly filter inputs for group creation, mnet, essay question, HOST param, wiki param, and others. An authenticated remote attacker could exploit this to generate XSS from which they could modify or steal confidential data of other users within the same web domain. (MDL-9288, MDL-11759, MDL-12079, MDL-12793, MDL-14806) It was discovered that Moodle did not correctly filter SQL inputs when performing a restore. An attacker authenticated as a Moodle administrator could execute arbitrary SQL commands as the moodle database user, leading to a loss of privacy or denial of service. (MDL-11857). Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu 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://usn.ubuntu.com/791-1/" ); script_set_attribute( attribute:"solution", value:"Update the affected moodle package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"exploit_framework_core", value:"true"); script_set_attribute(attribute:"d2_elliot_name", value:"Roundcube 0.2beta RCE"); script_set_attribute(attribute:"exploit_framework_d2_elliot", value:"true"); script_set_attribute(attribute:"exploit_framework_canvas", value:"true"); script_set_attribute(attribute:"canvas_package", value:'CANVAS'); script_cwe_id(20, 59, 79, 89, 94, 264, 352); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:moodle"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.04:-:lts"); script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:8.10"); script_set_attribute(attribute:"vuln_publication_date", value:"2007/06/14"); script_set_attribute(attribute:"patch_publication_date", value:"2009/06/24"); script_set_attribute(attribute:"plugin_publication_date", value:"2009/06/25"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"Ubuntu Security Notice (C) 2009-2019 Canonical, Inc. / NASL script (C) 2009-2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Ubuntu Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("ubuntu.inc"); include("misc_func.inc"); if ( ! get_kb_item("Host/local_checks_enabled") ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); release = get_kb_item("Host/Ubuntu/release"); if ( isnull(release) ) audit(AUDIT_OS_NOT, "Ubuntu"); release = chomp(release); if (! ereg(pattern:"^(8\.04|8\.10)$", string:release)) audit(AUDIT_OS_NOT, "Ubuntu 8.04 / 8.10", "Ubuntu " + release); if ( ! get_kb_item("Host/Debian/dpkg-l") ) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Ubuntu", cpu); flag = 0; if (ubuntu_check(osver:"8.04", pkgname:"moodle", pkgver:"1.8.2-1ubuntu4.2")) flag++; if (ubuntu_check(osver:"8.10", pkgname:"moodle", pkgver:"1.8.2-1.2ubuntu2.1")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : ubuntu_report_get() ); exit(0); } else { tested = ubuntu_pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "moodle"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-1919.NASL description Several remote vulnerabilities have been discovered in Smarty, a PHP templating engine. The Common Vulnerabilities and Exposures project identifies the following problems : - CVE-2008-4810 The _expand_quoted_text function allows for certain restrictions in templates, like function calling and PHP execution, to be bypassed. - CVE-2009-1669 The smarty_function_math function allows context-dependent attackers to execute arbitrary commands via shell metacharacters in the equation attribute of the math function. last seen 2020-06-01 modified 2020-06-02 plugin id 44784 published 2010-02-24 reporter This script is Copyright (C) 2010-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/44784 title Debian DSA-1919-1 : smarty - several vulnerabilities NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2009-052.NASL description A vulnerability has been identified and corrected in php-smarty : The _expand_quoted_text function in libs/Smarty_Compiler.class.php in Smarty 2.6.20 before r2797 allows remote attackers to execute arbitrary PHP code via vectors related to templates and (1) a dollar-sign character, aka php executed in templates last seen 2020-06-01 modified 2020-06-02 plugin id 37766 published 2009-04-23 reporter This script is Copyright (C) 2009-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/37766 title Mandriva Linux Security Advisory : php-smarty (MDVSA-2009:052) NASL family Debian Local Security Checks NASL id DEBIAN_DSA-1691.NASL description Several remote vulnerabilities have been discovered in Moodle, an online course management system. The following issues are addressed in this update, ranging from cross site scripting to remote code execution. Various cross site scripting issues in the Moodle codebase (CVE-2008-3326, CVE-2008-3325, CVE-2007-3555, CVE-2008-5432, MSA-08-0021, MDL-8849, MDL-12793, MDL-11414, MDL-14806, MDL-10276). Various cross site request forgery issues in the Moodle codebase (CVE-2008-3325, MSA-08-0023). Privilege escalation bugs in the Moodle codebase (MSA-08-0001, MDL-7755). SQL injection issue in the hotpot module (MSA-08-0010). An embedded copy of Smarty had several vulnerabilities (CVE-2008-4811, CVE-2008-4810 ). An embedded copy of Snoopy was vulnerable to cross site scripting (CVE-2008-4796 ). An embedded copy of Kses was vulnerable to cross site scripting (CVE-2008-1502 ). last seen 2020-06-01 modified 2020-06-02 plugin id 35254 published 2008-12-22 reporter This script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/35254 title Debian DSA-1691-1 : moodle - several vulnerabilities
References
- http://code.google.com/p/smarty-php/source/detail?r=2784&path=/trunk/libs/Smarty_Compiler.class.php
- http://code.google.com/p/smarty-php/source/detail?r=2797&path=/trunk/libs/Smarty_Compiler.class.php
- http://secunia.com/advisories/32329
- http://securityvulns.ru/Udocument746.html
- http://smarty-php.googlecode.com/svn/trunk/NEWS
- http://www.debian.org/security/2008/dsa-1691
- http://www.openwall.com/lists/oss-security/2008/10/25/2
- http://www.securityfocus.com/bid/31862
- https://bugs.gentoo.org/attachment.cgi?id=169804&action=view
- https://exchange.xforce.ibmcloud.com/vulnerabilities/46031