Vulnerabilities > CVE-2008-1066 - Improper Input Validation vulnerability in Smarty

047910
CVSS 7.5 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
PARTIAL
Availability impact
PARTIAL
network
low complexity
smarty
CWE-20
nessus

Summary

The modifier.regex_replace.php plugin in Smarty before 2.6.19, as used by Serendipity (S9Y) and other products, allows attackers to call arbitrary PHP functions via templates, related to a '\0' character in a search string.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Server Side Include (SSI) Injection
    An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
  • Cross Zone Scripting
    An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security. In a zone-based model, pages belong to one of a set of zones corresponding to the level of privilege assigned to that page. Pages in an untrusted zone would have a lesser level of access to the system and/or be restricted in the types of executable content it was allowed to invoke. In a cross-zone scripting attack, a page that should be assigned to a less privileged zone is granted the privileges of a more trusted zone. This can be accomplished by exploiting bugs in the browser, exploiting incorrect configuration in the zone controls, through a cross-site scripting attack that causes the attackers' content to be treated as coming from a more trusted page, or by leveraging some piece of system functionality that is accessible from both the trusted and less trusted zone. This attack differs from "Restful Privilege Escalation" in that the latter correlates to the inadequate securing of RESTful access methods (such as HTTP DELETE) on the server, while cross-zone scripting attacks the concept of security zones as implemented by a browser.
  • Cross Site Scripting through Log Files
    An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
  • Command Line Execution through SQL Injection
    An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.

Nessus

  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-2587.NASL
    description - Thu Mar 20 2008 John Berninger <john at ncphotography dot com> - 2.2.4-3 - revert to SVN snapshot so that config-time integrity checks don
    last seen2020-06-01
    modified2020-06-02
    plugin id31970
    published2008-04-18
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/31970
    titleFedora 7 : gallery2-2.2.4-3.fc7 (2008-2587)
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201006-13.NASL
    descriptionThe 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 seen2020-06-01
    modified2020-06-02
    plugin id46793
    published2010-06-03
    reporterThis script is Copyright (C) 2010-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/46793
    titleGLSA-201006-13 : Smarty: Multiple vulnerabilities
  • NASL familySuSE Local Security Checks
    NASL idSUSE_MOODLE-5109.NASL
    descriptionA bug in the smarty version contained in moodle could be exploited by attackers to execute arbitrary php code (CVE-2008-1066).
    last seen2020-06-01
    modified2020-06-02
    plugin id31637
    published2008-03-21
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/31637
    titleopenSUSE 10 Security Update : moodle (moodle-5109)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-2656.NASL
    descriptionUse system Smarty, instead of packaging our own. 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 seen2020-06-01
    modified2020-06-02
    plugin id31688
    published2008-03-28
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/31688
    titleFedora 8 : php-pear-PhpDocumentor-1.4.1-2.fc8 (2008-2656)
  • NASL familyFedora Local Security Checks
    NASL idFEDORA_2008-2650.NASL
    description - Thu Mar 20 2008 John Berninger <john at ncphotography dot com> - 2.2.4-3 - revert to SVN snapshot so that config-time integrity checks don
    last seen2020-06-01
    modified2020-06-02
    plugin id31971
    published2008-04-18
    reporterThis script is Copyright (C) 2008-2019 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/31971
    titleFedora 8 : gallery2-2.2.4-3.fc8 (2008-2650)
  • NASL familyDebian Local Security Checks
    NASL idDEBIAN_DSA-1520.NASL
    descriptionIt was discovered that the regex module in Smarty, a PHP templating engine, allows attackers to call arbitrary PHP functions via templates using the regex_replace plugin by a specially crafted search string.
    last seen2020-06-01
    modified2020-06-02
    plugin id31591
    published2008-03-17
    reporterThis script is Copyright (C) 2008-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
    sourcehttps://www.tenable.com/plugins/nessus/31591
    titleDebian DSA-1520-1 : smarty - insufficient input sanitising
  • NASL familyGentoo Local Security Checks
    NASL idGENTOO_GLSA-201111-04.NASL
    descriptionThe remote host is affected by the vulnerability described in GLSA-201111-04 (phpDocumentor: Function call injection) phpDocumentor bundles Smarty with the modifier.regex_replace.php plug-in which does not properly sanitize input related to the ASCII NUL character in a search string. Impact : A remote attacker could call arbitrary PHP functions via templates. Workaround : There is no known workaround at this time.
    last seen2020-06-01
    modified2020-06-02
    plugin id56808
    published2011-11-14
    reporterThis script is Copyright (C) 2011-2018 Tenable Network Security, Inc.
    sourcehttps://www.tenable.com/plugins/nessus/56808
    titleGLSA-201111-04 : phpDocumentor: Function call injection