Vulnerabilities > CVE-2009-5031 - Cross-Site Scripting vulnerability in multiple products
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
ModSecurity before 2.5.11 treats request parameter values containing single quotes as files, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks via a single quote in a request parameter in the Content-Disposition field of a request with a multipart/form-data Content-Type header.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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.
- Embedding Scripts in Non-Script Elements This attack is a form of Cross-Site Scripting (XSS) where malicious scripts are embedded in elements that are not expected to host scripts such as image tags (<img>), comments in XML documents (< !-CDATA->), etc. These tags may not be subject to the same input validation, output validation, and other content filtering and checking routines, so this can create an opportunity for an attacker to tunnel through the application's elements and launch a XSS attack through other elements. As with all remote attacks, it is important to differentiate the ability to launch an attack (such as probing an internal network for unpatched servers) and the ability of the remote attacker to collect and interpret the output of said attack.
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Cross-Site Scripting in Error Pages An attacker distributes a link (or possibly some other query structure) with a request to a third party web server that is malformed and also contains a block of exploit code in order to have the exploit become live code in the resulting error page. When the third party web server receives the crafted request and notes the error it then creates an error message that echoes the malformed message, including the exploit. Doing this converts the exploit portion of the message into to valid language elements that are executed by the viewing browser. When a victim executes the query provided by the attacker the infected error message error message is returned including the exploit code which then runs in the victim's browser. XSS can result in execution of code as well as data leakage (e.g. session cookies can be sent to the attacker). This type of attack is especially dangerous since the exploit appears to come from the third party web server, who the victim may trust and hence be more vulnerable to deception.
- Cross-Site Scripting Using Alternate Syntax The attacker uses alternate forms of keywords or commands that result in the same action as the primary form but which may not be caught by filters. For example, many keywords are processed in a case insensitive manner. If the site's web filtering algorithm does not convert all tags into a consistent case before the comparison with forbidden keywords it is possible to bypass filters (e.g., incomplete black lists) by using an alternate case structure. For example, the "script" tag using the alternate forms of "Script" or "ScRiPt" may bypass filters where "script" is the only form tested. Other variants using different syntax representations are also possible as well as using pollution meta-characters or entities that are eventually ignored by the rendering engine. The attack can result in the execution of otherwise prohibited functionality.
Nessus
NASL family SuSE Local Security Checks NASL id OPENSUSE-2013-641.NASL description - complete overhaul of this package, with update to 2.7.5. - ruleset update to 2.2.8-0-g0f07cbb. - new configuration framework private to mod_security2: /etc/apache2/conf.d/mod_security2.conf loads /usr/share/apache2-mod_security2/rules/modsecurity_crs_1 0_setup.conf, then /etc/apache2/mod_security2.d/*.conf , as set up based on advice in /etc/apache2/conf.d/mod_security2.conf Your configuration starting point is /etc/apache2/conf.d/mod_security2.conf - !!! Please note that mod_unique_id is needed for mod_security2 to run! - modsecurity-apache_2.7.5-build_fix_pcre.diff changes erroneaous linker parameter, preventing rpath in shared object. - fixes contained for the following bugs : - CVE-2009-5031, CVE-2012-2751 [bnc#768293] request parameter handling - [bnc#768293] multi-part bypass, minor threat - CVE-2013-1915 [bnc#813190] XML external entity vulnerability - CVE-2012-4528 [bnc#789393] rule bypass - CVE-2013-2765 [bnc#822664] NULL pointer dereference crash - new from 2.5.9 to 2.7.5, only major changes : - GPLv2 replaced by Apache License v2 - rules are not part of the source tarball any longer, but maintaned upstream externally, and included in this package. - documentation was externalized to a wiki. Package contains the FAQ and the reference manual in html form. - renamed the term last seen 2020-06-05 modified 2014-06-13 plugin id 75113 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75113 title openSUSE Security Update : apache2-mod_security2 (openSUSE-SU-2013:1331-1) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2013-641. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(75113); script_version("1.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2009-5031", "CVE-2012-2751", "CVE-2012-4528", "CVE-2013-1915", "CVE-2013-2765"); script_name(english:"openSUSE Security Update : apache2-mod_security2 (openSUSE-SU-2013:1331-1)"); script_summary(english:"Check for the openSUSE-2013-641 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: " - complete overhaul of this package, with update to 2.7.5. - ruleset update to 2.2.8-0-g0f07cbb. - new configuration framework private to mod_security2: /etc/apache2/conf.d/mod_security2.conf loads /usr/share/apache2-mod_security2/rules/modsecurity_crs_1 0_setup.conf, then /etc/apache2/mod_security2.d/*.conf , as set up based on advice in /etc/apache2/conf.d/mod_security2.conf Your configuration starting point is /etc/apache2/conf.d/mod_security2.conf - !!! Please note that mod_unique_id is needed for mod_security2 to run! - modsecurity-apache_2.7.5-build_fix_pcre.diff changes erroneaous linker parameter, preventing rpath in shared object. - fixes contained for the following bugs : - CVE-2009-5031, CVE-2012-2751 [bnc#768293] request parameter handling - [bnc#768293] multi-part bypass, minor threat - CVE-2013-1915 [bnc#813190] XML external entity vulnerability - CVE-2012-4528 [bnc#789393] rule bypass - CVE-2013-2765 [bnc#822664] NULL pointer dereference crash - new from 2.5.9 to 2.7.5, only major changes : - GPLv2 replaced by Apache License v2 - rules are not part of the source tarball any longer, but maintaned upstream externally, and included in this package. - documentation was externalized to a wiki. Package contains the FAQ and the reference manual in html form. - renamed the term 'Encryption' in directives that actually refer to hashes. See CHANGES file for more details. - new directive SecXmlExternalEntity, default off - byte conversion issues on s390x when logging fixed. - many small issues fixed that were discovered by a Coverity scanner - updated reference manual - wrong time calculation when logging for some timezones fixed. - replaced time-measuring mechanism with finer granularity for measured request/answer phases. (Stopwatch remains for compat.) - cookie parser memory leak fix - parsing of quoted strings in multipart Content-Disposition headers fixed. - SDBM deadlock fix - @rsub memory leak fix - cookie separator code improvements - build failure fixes - compile time option --enable-htaccess-config (set)" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=768293" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=789393" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=813190" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=822664" ); script_set_attribute( attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html" ); script_set_attribute( attribute:"solution", value:"Update the affected apache2-mod_security2 packages." ); 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:POC/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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.3"); script_set_attribute(attribute:"patch_publication_date", value:"2013/08/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); 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/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE12\.3)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.3", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE12.3", reference:"apache2-mod_security2-2.7.5-2.4.1") ) flag++; if ( rpm_check(release:"SUSE12.3", reference:"apache2-mod_security2-debuginfo-2.7.5-2.4.1") ) flag++; if ( rpm_check(release:"SUSE12.3", reference:"apache2-mod_security2-debugsource-2.7.5-2.4.1") ) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "apache2-mod_security2 / apache2-mod_security2-debuginfo / etc"); }NASL family SuSE Local Security Checks NASL id OPENSUSE-2013-640.NASL description - complete overhaul of this package, with update to 2.7.5. - ruleset update to 2.2.8-0-g0f07cbb. - new configuration framework private to mod_security2: /etc/apache2/conf.d/mod_security2.conf loads /usr/share/apache2-mod_security2/rules/modsecurity_crs_1 0_setup.conf, then /etc/apache2/mod_security2.d/*.conf , as set up based on advice in /etc/apache2/conf.d/mod_security2.conf Your configuration starting point is /etc/apache2/conf.d/mod_security2.conf - !!! Please note that mod_unique_id is needed for mod_security2 to run! - modsecurity-apache_2.7.5-build_fix_pcre.diff changes erroneaous linker parameter, preventing rpath in shared object. - fixes contained for the following bugs : - CVE-2009-5031, CVE-2012-2751 [bnc#768293] request parameter handling - [bnc#768293] multi-part bypass, minor threat - CVE-2013-1915 [bnc#813190] XML external entity vulnerability - CVE-2012-4528 [bnc#789393] rule bypass - CVE-2013-2765 [bnc#822664] NULL pointer dereference crash - new from 2.5.9 to 2.7.5, only major changes : - GPLv2 replaced by Apache License v2 - rules are not part of the source tarball any longer, but maintaned upstream externally, and included in this package. - documentation was externalized to a wiki. Package contains the FAQ and the reference manual in html form. - renamed the term last seen 2020-06-05 modified 2014-06-13 plugin id 75112 published 2014-06-13 reporter This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof. source https://www.tenable.com/plugins/nessus/75112 title openSUSE Security Update : apache2-mod_security2 (openSUSE-SU-2013:1336-1) code #%NASL_MIN_LEVEL 80502 # # (C) Tenable Network Security, Inc. # # The descriptive text and package checks in this plugin were # extracted from openSUSE Security Update openSUSE-2013-640. # # The text description of this plugin is (C) SUSE LLC. # include("compat.inc"); if (description) { script_id(75112); script_version("1.6"); script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/04"); script_cve_id("CVE-2009-5031", "CVE-2012-2751", "CVE-2012-4528", "CVE-2013-1915", "CVE-2013-2765"); script_name(english:"openSUSE Security Update : apache2-mod_security2 (openSUSE-SU-2013:1336-1)"); script_summary(english:"Check for the openSUSE-2013-640 patch"); script_set_attribute( attribute:"synopsis", value:"The remote openSUSE host is missing a security update." ); script_set_attribute( attribute:"description", value: " - complete overhaul of this package, with update to 2.7.5. - ruleset update to 2.2.8-0-g0f07cbb. - new configuration framework private to mod_security2: /etc/apache2/conf.d/mod_security2.conf loads /usr/share/apache2-mod_security2/rules/modsecurity_crs_1 0_setup.conf, then /etc/apache2/mod_security2.d/*.conf , as set up based on advice in /etc/apache2/conf.d/mod_security2.conf Your configuration starting point is /etc/apache2/conf.d/mod_security2.conf - !!! Please note that mod_unique_id is needed for mod_security2 to run! - modsecurity-apache_2.7.5-build_fix_pcre.diff changes erroneaous linker parameter, preventing rpath in shared object. - fixes contained for the following bugs : - CVE-2009-5031, CVE-2012-2751 [bnc#768293] request parameter handling - [bnc#768293] multi-part bypass, minor threat - CVE-2013-1915 [bnc#813190] XML external entity vulnerability - CVE-2012-4528 [bnc#789393] rule bypass - CVE-2013-2765 [bnc#822664] NULL pointer dereference crash - new from 2.5.9 to 2.7.5, only major changes : - GPLv2 replaced by Apache License v2 - rules are not part of the source tarball any longer, but maintaned upstream externally, and included in this package. - documentation was externalized to a wiki. Package contains the FAQ and the reference manual in html form. - renamed the term 'Encryption' in directives that actually refer to hashes. See CHANGES file for more details. - new directive SecXmlExternalEntity, default off - byte conversion issues on s390x when logging fixed. - many small issues fixed that were discovered by a Coverity scanner - updated reference manual - wrong time calculation when logging for some timezones fixed. - replaced time-measuring mechanism with finer granularity for measured request/answer phases. (Stopwatch remains for compat.) - cookie parser memory leak fix - parsing of quoted strings in multipart Content-Disposition headers fixed. - SDBM deadlock fix - @rsub memory leak fix - cookie separator code improvements - build failure fixes - compile time option --enable-htaccess-config (set)" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=768293" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=789393" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=813190" ); script_set_attribute( attribute:"see_also", value:"https://bugzilla.novell.com/show_bug.cgi?id=822664" ); script_set_attribute( attribute:"see_also", value:"https://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html" ); script_set_attribute( attribute:"solution", value:"Update the affected apache2-mod_security2 packages." ); 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:POC/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:"plugin_type", value:"local"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2-debuginfo"); script_set_attribute(attribute:"cpe", value:"p-cpe:/a:novell:opensuse:apache2-mod_security2-debugsource"); script_set_attribute(attribute:"cpe", value:"cpe:/o:novell:opensuse:12.2"); script_set_attribute(attribute:"patch_publication_date", value:"2013/08/05"); script_set_attribute(attribute:"plugin_publication_date", value:"2014/06/13"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_copyright(english:"This script is Copyright (C) 2014-2020 and is owned by Tenable, Inc. or an Affiliate thereof."); script_family(english:"SuSE Local Security Checks"); script_dependencies("ssh_get_info.nasl"); script_require_keys("Host/local_checks_enabled", "Host/SuSE/release", "Host/SuSE/rpm-list", "Host/cpu"); 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/SuSE/release"); if (isnull(release) || release =~ "^(SLED|SLES)") audit(AUDIT_OS_NOT, "openSUSE"); if (release !~ "^(SUSE12\.2)$") audit(AUDIT_OS_RELEASE_NOT, "openSUSE", "12.2", release); if (!get_kb_item("Host/SuSE/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING); ourarch = get_kb_item("Host/cpu"); if (!ourarch) audit(AUDIT_UNKNOWN_ARCH); if (ourarch !~ "^(i586|i686|x86_64)$") audit(AUDIT_ARCH_NOT, "i586 / i686 / x86_64", ourarch); flag = 0; if ( rpm_check(release:"SUSE12.2", reference:"apache2-mod_security2-2.7.5-14.4.1") ) flag++; if ( rpm_check(release:"SUSE12.2", reference:"apache2-mod_security2-debuginfo-2.7.5-14.4.1") ) flag++; if ( rpm_check(release:"SUSE12.2", reference:"apache2-mod_security2-debugsource-2.7.5-14.4.1") ) flag++; if (flag) { if (report_verbosity > 0) security_hole(port:0, extra:rpm_report_get()); else security_hole(0); exit(0); } else { tested = pkg_tests_get(); if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested); else audit(AUDIT_PACKAGE_NOT_INSTALLED, "apache2-mod_security2 / apache2-mod_security2-debuginfo / etc"); }NASL family Solaris Local Security Checks NASL id SOLARIS11_MODSECURITY_20140731.NASL description The remote Solaris system is missing necessary patches to address security updates : - ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031. (CVE-2012-2751) - ModSecurity before 2.7.3 allows remote attackers to read arbitrary files, send HTTP requests to intranet servers, or cause a denial of service (CPU and memory consumption) via an XML external entity declaration in conjunction with an entity reference, aka an XML External Entity (XXE) vulnerability. (CVE-2013-1915) last seen 2020-06-01 modified 2020-06-02 plugin id 80704 published 2015-01-19 reporter This script is Copyright (C) 2015-2018 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/80704 title Oracle Solaris Third-Party Patch Update : modsecurity (cve_2012_2751_improper_input) NASL family Mandriva Local Security Checks NASL id MANDRIVA_MDVSA-2012-182.NASL description Multiple vulnerabilities has been discovered and corrected in apache-mod_security : ModSecurity before 2.6.6, when used with PHP, does not properly handle single quotes not at the beginning of a request parameter value in the Content-Disposition field of a request with a multipart/form-data Content-Type header, which allows remote attackers to bypass filtering rules and perform other attacks such as cross-site scripting (XSS) attacks. NOTE: this vulnerability exists because of an incomplete fix for CVE-2009-5031 (CVE-2012-2751). ModSecurity <= 2.6.8 is vulnerable to multipart/invalid part ruleset bypass, this was fixed in 2.7.0 (released on2012-10-16) (CVE-2012-4528). The updated packages have been patched to correct these issues. last seen 2020-06-01 modified 2020-06-02 plugin id 63331 published 2012-12-24 reporter This script is Copyright (C) 2012-2019 Tenable Network Security, Inc. source https://www.tenable.com/plugins/nessus/63331 title Mandriva Linux Security Advisory : apache-mod_security (MDVSA-2012:182)
References
- http://blog.ivanristic.com/2012/06/modsecurity-and-modsecurity-core-rule-set-multipart-bypasses.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00020.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00025.html
- http://lists.opensuse.org/opensuse-updates/2013-08/msg00031.html
- http://mod-security.svn.sourceforge.net/viewvc/mod-security/m2/branches/2.6.x/CHANGES
- http://secunia.com/advisories/49576
- http://www.openwall.com/lists/oss-security/2012/06/22/1
- http://www.openwall.com/lists/oss-security/2012/06/22/2
- http://www.securityfocus.com/bid/54156
- http://www.suspekt.org/downloads/POC2009-ShockingNewsInPHPExploitation.pdf
- https://www.modsecurity.org/fisheye/browse/modsecurity/m2/branches/2.5.x/apache2/msc_multipart.c?r2=1419&r1=1366