Smarty before 3.1.39 allows code injection via an unexpected function name after a {function name= substring.

The remote Ubuntu 16.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5348-2 advisory.

    USN-5348-1 fixed several vulnerabilities in Smarty. This update provides the fixes for CVE-2021-21408,     CVE-2021-26119, CVE-2021-26120 and CVE-2021-29454 for Ubuntu 16.04 ESM.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 20.04 ESM host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5348-3 advisory.

    USN-5348-1 fixed several vulnerabilities in Smarty. This update provides the fixes for CVE-2021-21408,     CVE-2021-26119, CVE-2021-26120 and CVE-2021-29454 for Ubuntu 20.04 ESM.



Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-52154efd61 advisory.

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.43 and 4.0.3, template authors could run restricted static php     methods. Users should upgrade to version 3.1.43 or 4.0.3 to receive a patch. (CVE-2021-21408)

  - Smarty before 3.1.39 allows a Sandbox Escape because $smarty.template_object can be accessed in sandbox     mode. (CVE-2021-26119)

  - Smarty before 3.1.39 allows code injection via an unexpected function name after a {function name=     substring. (CVE-2021-26120)

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by     crafting a malicious math string. If a math string was passed through as user provided data to the math     function, external users could run arbitrary PHP code by crafting a malicious math string. Users should     upgrade to version 3.1.42 or 4.0.2 to receive a patch. (CVE-2021-29454)

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing     a malicious {block} name or {include} file name. Sites that cannot fully trust template authors should     upgrade to versions 3.1.45 or 4.1.1 to receive a patch for this issue. There are currently no known     workarounds. (CVE-2022-29221)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 10 / 11 host has a package installed that is affected by multiple vulnerabilities as referenced in the dsa-5151 advisory.

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.43 and 4.0.3, template authors could run restricted static php     methods. Users should upgrade to version 3.1.43 or 4.0.3 to receive a patch. (CVE-2021-21408)

  - Smarty before 3.1.39 allows a Sandbox Escape because $smarty.template_object can be accessed in sandbox     mode. (CVE-2021-26119)

  - Smarty before 3.1.39 allows code injection via an unexpected function name after a {function name=     substring. (CVE-2021-26120)

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.42 and 4.0.2, template authors could run arbitrary PHP code by     crafting a malicious math string. If a math string was passed through as user provided data to the math     function, external users could run arbitrary PHP code by crafting a malicious math string. Users should     upgrade to version 3.1.42 or 4.0.2 to receive a patch. (CVE-2021-29454)

  - Smarty is a template engine for PHP, facilitating the separation of presentation (HTML/CSS) from     application logic. Prior to versions 3.1.45 and 4.1.1, template authors could inject php code by choosing     a malicious {block} name or {include} file name. Sites that cannot fully trust template authors should     upgrade to versions 3.1.45 or 4.1.1 to receive a patch for this issue. There are currently no known     workarounds. (CVE-2022-29221)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 18.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-5348-1 advisory.

    David Gnedt and Thomas Konrad discovered that Smarty was incorrectly sanitizing the paths present in the     templates. An attacker could possibly use this use to read arbitrary files when controlling the executed     template. (CVE-2018-13982)

    It was discovered that Smarty was incorrectly sanitizing the paths present in the templates. An attacker     could possibly use this use to read arbitrary files when controlling the executed template.
    (CVE-2018-16831)

    It was discovered that Smarty was incorrectly validating security policy data, allowing the execution of     static classes even when not permitted by the security settings. An attacker could possibly use this issue     to execute arbitrary code. (CVE-2021-21408)

    It was discovered that Smarty was incorrectly managing access control to template objects, which allowed     users to perform a sandbox escape. An attacker could possibly use this issue to send specially crafted     input to applications that use Smarty and execute arbitrary code. (CVE-2021-26119)

    It was discovered that Smarty was not checking for special characters when setting function names during     plugin compile operations. An attacker could possibly use this issue to send specially crafted input to     applications that use Smarty and execute arbitrary code. (CVE-2021-26120)

    It was discovered that Smarty was incorrectly sanitizing characters in math strings processed by the math     function. An attacker could possibly use this issue to send specially crafted input to applications that     use Smarty and execute arbitrary code. (CVE-2021-29454)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote host is affected by the vulnerability described in GLSA-202105-06 (Smarty: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in Smarty template engine.
      Please review the CVE identifiers referenced below for details.
  Impact :

    Please review the referenced CVE identifiers for details.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
183613	Ubuntu 16.04 ESM : Smarty vulnerabilities (USN-5348-2)	Nessus	Ubuntu Local Security Checks	critical
183593	Ubuntu 20.04 ESM : Smarty vulnerabilities (USN-5348-3)	Nessus	Ubuntu Local Security Checks	critical
169147	Fedora 36 : php-Smarty (2022-52154efd61)	Nessus	Fedora Local Security Checks	critical
161686	Debian DSA-5151-1 : smarty3 - security update	Nessus	Debian Local Security Checks	critical
159268	Ubuntu 18.04 LTS : Smarty vulnerabilities (USN-5348-1)	Nessus	Ubuntu Local Security Checks	critical
153893	FreeBSD : Bacula-Web -- Multiple Vulnerabilities (f05dbd1f-2599-11ec-91be-001b217b3468)	Nessus	FreeBSD Local Security Checks	critical
150000	GLSA-202105-06 : Smarty: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical

Detections

Analytics

CVE-2021-26120

critical

Tenable Plugins

critical

critical

critical

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critical