Vulnerabilities > CVE-2017-1000480 - Code Injection vulnerability in Smarty
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Smarty 3 before 3.1.32 is vulnerable to a PHP code injection when calling fetch() or display() functions on custom resources that does not sanitize template name.
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 Debian Local Security Checks NASL id DEBIAN_DLA-1249.NASL description It was previously discovered that there was a code-injection vulnerability in smarty3, a PHP template engine. A via specially crafted filename in comments could result in arbitrary code execution. However, the fix in 3.1.10-2+deb7u2 was incorrect. For Debian 7 last seen 2020-03-17 modified 2018-01-22 plugin id 106205 published 2018-01-22 reporter This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106205 title Debian DLA-1249-2 : smarty3 regression update code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DLA-1249-2. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(106205); script_version("3.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/03/12"); script_cve_id("CVE-2017-1000480"); script_name(english:"Debian DLA-1249-2 : smarty3 regression update"); script_summary(english:"Checks dpkg output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security update." ); script_set_attribute( attribute:"description", value: "It was previously discovered that there was a code-injection vulnerability in smarty3, a PHP template engine. A via specially crafted filename in comments could result in arbitrary code execution. However, the fix in 3.1.10-2+deb7u2 was incorrect. For Debian 7 'Wheezy', this regression has been addressed in smarty3 version 3.1.10-2+deb7u3. We recommend that you upgrade your smarty3 packages. NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA 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://lists.debian.org/debian-lts-announce/2018/02/msg00000.html" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/wheezy/smarty3" ); script_set_attribute( attribute:"solution", value:"Upgrade the affected smarty3 package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:smarty3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:7.0"); script_set_attribute(attribute:"patch_publication_date", value:"2018/02/01"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/22"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"7.0", prefix:"smarty3", reference:"3.1.10-2+deb7u3")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");
NASL family Fedora Local Security Checks NASL id FEDORA_2019-E595E8A7D7.NASL description ===== 3.1.33 release ===== 12.09.2018 ===== 3.1.33-dev-12 ===== 03.09.2018 - bugfix {foreach} using new style property access like {$item@property} on Smarty 2 style named foreach loop could produce errors https://github.com/smarty-php/smarty/issues/484 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 122684 published 2019-03-08 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122684 title Fedora 29 : php-Smarty (2019-e595e8a7d7) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-e595e8a7d7. # include("compat.inc"); if (description) { script_id(122684); script_version("1.4"); script_cvs_date("Date: 2020/02/05"); script_cve_id("CVE-2017-1000480", "CVE-2018-13982", "CVE-2018-16831"); script_xref(name:"FEDORA", value:"2019-e595e8a7d7"); script_name(english:"Fedora 29 : php-Smarty (2019-e595e8a7d7)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "===== 3.1.33 release ===== 12.09.2018 ===== 3.1.33-dev-12 ===== 03.09.2018 - bugfix {foreach} using new style property access like {$item@property} on Smarty 2 style named foreach loop could produce errors https://github.com/smarty-php/smarty/issues/484 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. 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://bodhi.fedoraproject.org/updates/FEDORA-2019-e595e8a7d7" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/154g" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/186" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/238" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/293" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/391" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/396" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/450" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/478" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/322" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/337" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/349" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/368" ); script_set_attribute( attribute:"solution", value:"Update the affected php-Smarty package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:php-Smarty"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:29"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/03"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/08"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); 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 = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^29([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 29", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC29", reference:"php-Smarty-3.1.33-1.fc29")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "php-Smarty"); }
NASL family Fedora Local Security Checks NASL id FEDORA_2019-D248C5AA39.NASL description ===== 3.1.33 release ===== 12.09.2018 ===== 3.1.33-dev-12 ===== 03.09.2018 - bugfix {foreach} using new style property access like {$item@property} on Smarty 2 style named foreach loop could produce errors https://github.com/smarty-php/smarty/issues/484 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues. last seen 2020-06-01 modified 2020-06-02 plugin id 122683 published 2019-03-08 reporter This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/122683 title Fedora 28 : php-Smarty (2019-d248c5aa39) code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Fedora Security Advisory FEDORA-2019-d248c5aa39. # include("compat.inc"); if (description) { script_id(122683); script_version("1.4"); script_cvs_date("Date: 2020/02/05"); script_cve_id("CVE-2017-1000480", "CVE-2018-13982", "CVE-2018-16831"); script_xref(name:"FEDORA", value:"2019-d248c5aa39"); script_name(english:"Fedora 28 : php-Smarty (2019-d248c5aa39)"); script_summary(english:"Checks rpm output for the updated package."); script_set_attribute( attribute:"synopsis", value:"The remote Fedora host is missing a security update." ); script_set_attribute( attribute:"description", value: "===== 3.1.33 release ===== 12.09.2018 ===== 3.1.33-dev-12 ===== 03.09.2018 - bugfix {foreach} using new style property access like {$item@property} on Smarty 2 style named foreach loop could produce errors https://github.com/smarty-php/smarty/issues/484 Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website. 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://bodhi.fedoraproject.org/updates/FEDORA-2019-d248c5aa39" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/154g" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/186" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/238" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/293" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/391" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/396" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/450" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/issues/478" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/322" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/337" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/349" ); script_set_attribute( attribute:"see_also", value:"https://github.com/smarty-php/smarty/pull/368" ); script_set_attribute( attribute:"solution", value:"Update the affected php-Smarty package." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:fedoraproject:fedora:php-Smarty"); script_set_attribute(attribute:"cpe", value:"cpe:/o:fedoraproject:fedora:28"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/01/03"); script_set_attribute(attribute:"patch_publication_date", value:"2019/03/06"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/08"); script_set_attribute(attribute:"generated_plugin", value:"current"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); 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 = pregmatch(pattern: "Fedora.*release ([0-9]+)", string:release); if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Fedora"); os_ver = os_ver[1]; if (! preg(pattern:"^28([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Fedora 28", "Fedora " + os_ver); if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); cpu = get_kb_item("Host/cpu"); if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH); if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$") audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Fedora", cpu); flag = 0; if (rpm_check(release:"FC28", reference:"php-Smarty-3.1.33-1.fc28")) flag++; if (flag) { security_report_v4( port : 0, severity : SECURITY_HOLE, extra : rpm_report_get() ); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "php-Smarty"); }
NASL family Debian Local Security Checks NASL id DEBIAN_DSA-4094.NASL description It was discovered that Smarty, a PHP template engine, was vulnerable to code-injection attacks. An attacker was able to craft a filename in comments that could lead to arbitrary code execution on the host running Smarty. last seen 2020-06-01 modified 2020-06-02 plugin id 106235 published 2018-01-23 reporter This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/106235 title Debian DSA-4094-1 : smarty3 - security update code # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from Debian Security Advisory DSA-4094. The text # itself is copyright (C) Software in the Public Interest, Inc. # include("compat.inc"); if (description) { script_id(106235); script_version("3.4"); script_cvs_date("Date: 2018/11/13 12:30:46"); script_cve_id("CVE-2017-1000480"); script_xref(name:"DSA", value:"4094"); script_name(english:"Debian DSA-4094-1 : smarty3 - security update"); script_summary(english:"Checks dpkg output for the updated package"); script_set_attribute( attribute:"synopsis", value:"The remote Debian host is missing a security-related update." ); script_set_attribute( attribute:"description", value: "It was discovered that Smarty, a PHP template engine, was vulnerable to code-injection attacks. An attacker was able to craft a filename in comments that could lead to arbitrary code execution on the host running Smarty." ); script_set_attribute( attribute:"see_also", value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=886460" ); script_set_attribute( attribute:"see_also", value:"https://security-tracker.debian.org/tracker/source-package/smarty3" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/jessie/smarty3" ); script_set_attribute( attribute:"see_also", value:"https://packages.debian.org/source/stretch/smarty3" ); script_set_attribute( attribute:"see_also", value:"https://www.debian.org/security/2018/dsa-4094" ); script_set_attribute( attribute:"solution", value: "Upgrade the smarty3 packages. For the oldstable distribution (jessie), this problem has been fixed in version 3.1.21-1+deb8u1. For the stable distribution (stretch), this problem has been fixed in version 3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u1." ); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"); script_set_attribute(attribute:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:smarty3"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:8.0"); script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:9.0"); script_set_attribute(attribute:"patch_publication_date", value:"2018/01/22"); script_set_attribute(attribute:"plugin_publication_date", value:"2018/01/23"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2018 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"Debian Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l"); exit(0); } include("audit.inc"); include("debian_package.inc"); if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED); if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian"); if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING); flag = 0; if (deb_check(release:"8.0", prefix:"smarty3", reference:"3.1.21-1+deb8u1")) flag++; if (deb_check(release:"9.0", prefix:"smarty3", reference:"3.1.31+20161214.1.c7d42e4+selfpack1-2+deb9u1")) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get()); else security_hole(0); exit(0); } else audit(AUDIT_HOST_NOT, "affected");